./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip2_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip2_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/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 cda310f9ec541637625c4cf2e3662e22b6979f61 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-1dbac8b [2018-11-10 07:41:49,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:41:49,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:41:49,570 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:41:49,570 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:41:49,571 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:41:49,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:41:49,573 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:41:49,574 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:41:49,575 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:41:49,576 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:41:49,576 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:41:49,577 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:41:49,577 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:41:49,578 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:41:49,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:41:49,579 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:41:49,581 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:41:49,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:41:49,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:41:49,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:41:49,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:41:49,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:41:49,587 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:41:49,587 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:41:49,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:41:49,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:41:49,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:41:49,590 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:41:49,591 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:41:49,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:41:49,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:41:49,592 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:41:49,592 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:41:49,593 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:41:49,593 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:41:49,593 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 07:41:49,605 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:41:49,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:41:49,606 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:41:49,606 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:41:49,606 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:41:49,606 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 07:41:49,606 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 07:41:49,607 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 07:41:49,607 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 07:41:49,607 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 07:41:49,607 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 07:41:49,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:41:49,607 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:41:49,608 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 07:41:49,609 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 07:41:49,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:41:49,609 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:41:49,609 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 07:41:49,609 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:41:49,609 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:41:49,609 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 07:41:49,610 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 07:41:49,610 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_172698d4-558e-4483-af3e-4941c6251ae4/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 -> cda310f9ec541637625c4cf2e3662e22b6979f61 [2018-11-10 07:41:49,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:41:49,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:41:49,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:41:49,644 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:41:49,644 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:41:49,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Flip2_false-termination_true-no-overflow.c [2018-11-10 07:41:49,683 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/data/a4535098b/d837c395b98143e8b74f2dd71d00322b/FLAG7d1048d00 [2018-11-10 07:41:50,081 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:41:50,081 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/sv-benchmarks/c/termination-restricted-15/Flip2_false-termination_true-no-overflow.c [2018-11-10 07:41:50,085 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/data/a4535098b/d837c395b98143e8b74f2dd71d00322b/FLAG7d1048d00 [2018-11-10 07:41:50,094 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/data/a4535098b/d837c395b98143e8b74f2dd71d00322b [2018-11-10 07:41:50,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:41:50,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:41:50,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:41:50,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:41:50,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:41:50,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4897ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50, skipping insertion in model container [2018-11-10 07:41:50,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:41:50,120 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:41:50,210 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:41:50,212 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:41:50,221 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:41:50,229 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:41:50,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50 WrapperNode [2018-11-10 07:41:50,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:41:50,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:41:50,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:41:50,230 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:41:50,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:41:50,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:41:50,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:41:50,257 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:41:50,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... [2018-11-10 07:41:50,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:41:50,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:41:50,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:41:50,273 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:41:50,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/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 [2018-11-10 07:41:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:41:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:41:50,462 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:41:50,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:41:50 BoogieIcfgContainer [2018-11-10 07:41:50,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:41:50,463 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 07:41:50,463 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 07:41:50,467 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 07:41:50,467 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:41:50,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 07:41:50" (1/3) ... [2018-11-10 07:41:50,469 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f63fda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:41:50, skipping insertion in model container [2018-11-10 07:41:50,469 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:41:50,469 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:41:50" (2/3) ... [2018-11-10 07:41:50,469 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f63fda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:41:50, skipping insertion in model container [2018-11-10 07:41:50,469 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:41:50,470 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:41:50" (3/3) ... [2018-11-10 07:41:50,471 INFO L375 chiAutomizerObserver]: Analyzing ICFG Flip2_false-termination_true-no-overflow.c [2018-11-10 07:41:50,525 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:41:50,526 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 07:41:50,526 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 07:41:50,526 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 07:41:50,526 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:41:50,526 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:41:50,526 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 07:41:50,526 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:41:50,527 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 07:41:50,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 07:41:50,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:41:50,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:50,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:50,566 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:41:50,567 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:41:50,567 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 07:41:50,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 07:41:50,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:41:50,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:50,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:50,568 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:41:50,569 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:41:50,575 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 7#L19-2true [2018-11-10 07:41:50,576 INFO L795 eck$LassoCheckResult]: Loop: 7#L19-2true assume true; 8#L13-1true assume !!(main_~i~0 > 0 && main_~j~0 > 0); 12#L14true assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 7#L19-2true [2018-11-10 07:41:50,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:50,581 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 07:41:50,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:50,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:50,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:50,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:50,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:50,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-11-10 07:41:50,662 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:50,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:50,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:50,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:50,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:50,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:50,676 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-10 07:41:50,676 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:50,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:50,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:50,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:50,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:50,758 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:50,759 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:50,760 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:50,760 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:50,760 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:41:50,760 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:50,760 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:50,760 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:50,760 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:41:50,760 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:50,761 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:50,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:50,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:50,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:50,925 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:50,926 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/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 [2018-11-10 07:41:50,930 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:50,930 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:50,951 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:41:50,951 INFO L446 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_172698d4-558e-4483-af3e-4941c6251ae4/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 [2018-11-10 07:41:50,956 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:50,956 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:50,984 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:41:50,984 INFO L446 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_172698d4-558e-4483-af3e-4941c6251ae4/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 [2018-11-10 07:41:50,986 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:50,986 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/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 [2018-11-10 07:41:51,007 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:41:51,008 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:51,728 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:41:51,729 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:51,729 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:51,729 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:51,729 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:51,730 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:41:51,730 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:51,730 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:51,730 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:51,730 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:41:51,730 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:51,730 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:51,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:51,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:51,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:51,800 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:51,805 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:41:51,807 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 [2018-11-10 07:41:51,808 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:51,809 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:51,809 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:51,809 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:51,813 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:41:51,813 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:41:51,821 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:41:51,821 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 [2018-11-10 07:41:51,822 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:51,822 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:51,822 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:51,822 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:51,825 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:41:51,825 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:41:51,833 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:41:51,834 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 [2018-11-10 07:41:51,835 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:51,835 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:41:51,835 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:51,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:51,836 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:51,836 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:41:51,837 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:41:51,849 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:41:51,857 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:41:51,857 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:41:51,859 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:41:51,859 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:41:51,859 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:41:51,860 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-10 07:41:51,861 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:41:51,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:51,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:51,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:51,922 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 [2018-11-10 07:41:51,923 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2018-11-10 07:41:51,961 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 33 states and 43 transitions. Complement of second has 8 states. [2018-11-10 07:41:51,961 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 [2018-11-10 07:41:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:41:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2018-11-10 07:41:51,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-10 07:41:51,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:51,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-10 07:41:51,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:51,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-10 07:41:51,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:51,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2018-11-10 07:41:51,968 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 07:41:51,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 23 transitions. [2018-11-10 07:41:51,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 07:41:51,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-10 07:41:51,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2018-11-10 07:41:51,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:51,972 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2018-11-10 07:41:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2018-11-10 07:41:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-10 07:41:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 07:41:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-11-10 07:41:51,991 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-10 07:41:51,991 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-10 07:41:51,991 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 07:41:51,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2018-11-10 07:41:51,992 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 07:41:51,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:51,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:51,992 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 07:41:51,992 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:41:51,993 INFO L793 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 86#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 87#L19-2 assume true; 90#L13-1 [2018-11-10 07:41:51,993 INFO L795 eck$LassoCheckResult]: Loop: 90#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 99#L14 assume !(main_~i~0 < main_~j~0); 100#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 89#L19-2 assume true; 90#L13-1 [2018-11-10 07:41:51,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-10 07:41:51,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:51,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:51,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:51,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:51,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:51,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:51,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1298038, now seen corresponding path program 1 times [2018-11-10 07:41:51,997 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:51,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:51,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:51,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:51,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1805984280, now seen corresponding path program 1 times [2018-11-10 07:41:52,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:52,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:52,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:52,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,027 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:52,027 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:52,028 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:52,028 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:52,028 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:41:52,028 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,028 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:52,028 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:52,028 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 07:41:52,028 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:52,028 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:52,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,084 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:52,084 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,091 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:52,092 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:52,109 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:41:52,109 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,120 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:52,120 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,144 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:41:52,144 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:52,236 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:41:52,239 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:52,239 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:52,239 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:52,239 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:52,239 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:41:52,239 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,240 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:52,240 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:52,240 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 07:41:52,240 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:52,240 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:52,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,282 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:52,283 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:41:52,283 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 [2018-11-10 07:41:52,284 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:52,285 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:52,285 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:52,285 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:52,286 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:41:52,286 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:41:52,292 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:41:52,293 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 [2018-11-10 07:41:52,293 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:52,294 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:41:52,294 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:52,294 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:52,294 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:52,295 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:41:52,295 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:41:52,300 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:41:52,305 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 07:41:52,305 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-10 07:41:52,305 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:41:52,305 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:41:52,306 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:41:52,306 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-10 07:41:52,306 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:41:52,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:52,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:52,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:52,366 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:41:52,366 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-10 07:41:52,381 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 44 states and 58 transitions. Complement of second has 7 states. [2018-11-10 07:41:52,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:41:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:41:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 07:41:52,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-10 07:41:52,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:52,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 07:41:52,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:52,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-10 07:41:52,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:52,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 58 transitions. [2018-11-10 07:41:52,384 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-10 07:41:52,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 57 transitions. [2018-11-10 07:41:52,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-10 07:41:52,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-10 07:41:52,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 57 transitions. [2018-11-10 07:41:52,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:52,386 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 57 transitions. [2018-11-10 07:41:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 57 transitions. [2018-11-10 07:41:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-11-10 07:41:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 07:41:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2018-11-10 07:41:52,389 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2018-11-10 07:41:52,389 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2018-11-10 07:41:52,389 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 07:41:52,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2018-11-10 07:41:52,390 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-10 07:41:52,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:52,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:52,391 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 07:41:52,391 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:41:52,391 INFO L793 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 192#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 193#L19-2 assume true; 211#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 200#L14 assume !(main_~i~0 < main_~j~0); 203#L19 [2018-11-10 07:41:52,392 INFO L795 eck$LassoCheckResult]: Loop: 203#L19 assume main_~i~0 > main_~j~0;main_~j~0 := main_~i~0; 204#L19-2 assume true; 219#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 210#L14 assume !(main_~i~0 < main_~j~0); 203#L19 [2018-11-10 07:41:52,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,393 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-10 07:41:52,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:52,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:52,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:52,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1525496, now seen corresponding path program 1 times [2018-11-10 07:41:52,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:52,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:52,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:52,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,408 INFO L82 PathProgramCache]: Analyzing trace with hash 384046303, now seen corresponding path program 1 times [2018-11-10 07:41:52,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:52,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:52,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:52,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,453 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:52,454 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:52,454 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:52,454 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:52,454 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:41:52,454 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,454 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:52,454 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:52,454 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 07:41:52,454 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:52,454 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:52,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,482 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:52,482 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:52,484 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:52,501 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:41:52,501 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,508 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:52,508 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,528 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:41:52,528 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:52,698 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:41:52,700 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:52,700 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:52,700 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:52,700 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:52,700 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:41:52,700 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,700 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:52,700 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:52,701 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 07:41:52,701 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:52,701 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:52,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,741 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:52,741 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:41:52,741 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 [2018-11-10 07:41:52,742 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:52,742 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:41:52,742 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:52,742 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:52,742 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:52,743 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:41:52,743 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:41:52,745 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:41:52,747 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 07:41:52,747 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:41:52,748 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:41:52,748 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:41:52,748 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:41:52,748 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-10 07:41:52,749 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:41:52,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:52,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:52,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:52,786 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 [2018-11-10 07:41:52,786 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 53 transitions. cyclomatic complexity: 21 Second operand 3 states. [2018-11-10 07:41:52,802 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 53 transitions. cyclomatic complexity: 21. Second operand 3 states. Result 101 states and 131 transitions. Complement of second has 5 states. [2018-11-10 07:41:52,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 07:41:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 07:41:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-10 07:41:52,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-10 07:41:52,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:52,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 07:41:52,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:52,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-10 07:41:52,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:52,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 131 transitions. [2018-11-10 07:41:52,805 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-10 07:41:52,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 84 states and 110 transitions. [2018-11-10 07:41:52,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2018-11-10 07:41:52,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-10 07:41:52,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 110 transitions. [2018-11-10 07:41:52,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:52,807 INFO L705 BuchiCegarLoop]: Abstraction has 84 states and 110 transitions. [2018-11-10 07:41:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 110 transitions. [2018-11-10 07:41:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2018-11-10 07:41:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-10 07:41:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2018-11-10 07:41:52,812 INFO L728 BuchiCegarLoop]: Abstraction has 62 states and 83 transitions. [2018-11-10 07:41:52,812 INFO L608 BuchiCegarLoop]: Abstraction has 62 states and 83 transitions. [2018-11-10 07:41:52,812 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 07:41:52,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 83 transitions. [2018-11-10 07:41:52,815 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-10 07:41:52,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:52,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:52,816 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-10 07:41:52,816 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:41:52,816 INFO L793 eck$LassoCheckResult]: Stem: 382#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 380#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 381#L19-2 assume true; 408#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 405#L14 assume !(main_~i~0 < main_~j~0); 391#L19 assume main_~i~0 > main_~j~0;main_~j~0 := main_~i~0; 392#L19-2 assume true; 422#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 401#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 398#L19-2 [2018-11-10 07:41:52,816 INFO L795 eck$LassoCheckResult]: Loop: 398#L19-2 assume true; 406#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 402#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 398#L19-2 [2018-11-10 07:41:52,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash 384046301, now seen corresponding path program 1 times [2018-11-10 07:41:52,816 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:52,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:52,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:52,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:52,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:41:52,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:41:52,844 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 07:41:52,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:52,845 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 2 times [2018-11-10 07:41:52,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:52,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:52,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:52,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:52,872 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:52,872 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:52,872 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:52,872 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:52,872 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:41:52,872 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,872 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:52,872 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:52,872 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 07:41:52,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:52,873 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:52,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:52,936 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:52,937 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:52,939 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:52,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:41:52,960 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:53,259 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:41:53,260 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:53,261 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:53,261 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:53,261 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:53,261 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:41:53,261 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:53,261 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:53,261 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:53,261 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 07:41:53,261 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:53,261 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:53,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,308 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:53,308 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:41:53,309 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 [2018-11-10 07:41:53,309 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:53,309 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:53,309 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:53,310 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:53,311 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:41:53,311 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:41:53,314 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:41:53,314 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 [2018-11-10 07:41:53,315 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:53,315 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:53,315 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:53,315 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:53,316 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:41:53,317 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:41:53,319 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:41:53,319 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 [2018-11-10 07:41:53,320 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:53,320 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:41:53,320 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:53,320 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:53,320 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:53,321 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:41:53,321 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:41:53,326 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:41:53,329 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:41:53,329 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:41:53,329 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:41:53,329 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:41:53,330 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:41:53,330 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-10 07:41:53,330 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:41:53,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:53,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:53,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:53,361 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 [2018-11-10 07:41:53,361 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 62 states and 83 transitions. cyclomatic complexity: 32 Second operand 4 states. [2018-11-10 07:41:53,373 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 62 states and 83 transitions. cyclomatic complexity: 32. Second operand 4 states. Result 99 states and 130 transitions. Complement of second has 7 states. [2018-11-10 07:41:53,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:41:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:41:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-10 07:41:53,373 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 07:41:53,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:53,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-10 07:41:53,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:53,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-10 07:41:53,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:53,374 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 130 transitions. [2018-11-10 07:41:53,376 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-10 07:41:53,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 77 states and 103 transitions. [2018-11-10 07:41:53,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-10 07:41:53,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-10 07:41:53,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 103 transitions. [2018-11-10 07:41:53,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:53,377 INFO L705 BuchiCegarLoop]: Abstraction has 77 states and 103 transitions. [2018-11-10 07:41:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 103 transitions. [2018-11-10 07:41:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2018-11-10 07:41:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 07:41:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2018-11-10 07:41:53,380 INFO L728 BuchiCegarLoop]: Abstraction has 63 states and 85 transitions. [2018-11-10 07:41:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:41:53,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:41:53,382 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 3 states. [2018-11-10 07:41:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:41:53,393 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2018-11-10 07:41:53,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:41:53,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 101 transitions. [2018-11-10 07:41:53,394 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 19 [2018-11-10 07:41:53,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 71 states and 89 transitions. [2018-11-10 07:41:53,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-10 07:41:53,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-10 07:41:53,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 89 transitions. [2018-11-10 07:41:53,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:53,395 INFO L705 BuchiCegarLoop]: Abstraction has 71 states and 89 transitions. [2018-11-10 07:41:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 89 transitions. [2018-11-10 07:41:53,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2018-11-10 07:41:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-10 07:41:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2018-11-10 07:41:53,398 INFO L728 BuchiCegarLoop]: Abstraction has 61 states and 79 transitions. [2018-11-10 07:41:53,398 INFO L608 BuchiCegarLoop]: Abstraction has 61 states and 79 transitions. [2018-11-10 07:41:53,398 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 07:41:53,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 79 transitions. [2018-11-10 07:41:53,399 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 19 [2018-11-10 07:41:53,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:53,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:53,399 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-10 07:41:53,400 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:41:53,400 INFO L793 eck$LassoCheckResult]: Stem: 746#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 744#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 745#L19-2 assume true; 795#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 794#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 793#L19-2 assume true; 792#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 765#L14 assume !(main_~i~0 < main_~j~0); 766#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 756#L19-2 [2018-11-10 07:41:53,400 INFO L795 eck$LassoCheckResult]: Loop: 756#L19-2 assume true; 790#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 789#L14 assume !(main_~i~0 < main_~j~0); 755#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 756#L19-2 [2018-11-10 07:41:53,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash 381788113, now seen corresponding path program 1 times [2018-11-10 07:41:53,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:53,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:53,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:41:53,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:53,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:41:53,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:41:53,417 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 07:41:53,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1114348, now seen corresponding path program 2 times [2018-11-10 07:41:53,417 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:53,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:53,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:53,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,433 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:53,433 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:53,433 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:53,433 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:53,433 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:41:53,433 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:53,433 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:53,433 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:53,433 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 07:41:53,433 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:53,433 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:53,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,464 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:53,464 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:53,476 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:41:53,476 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:53,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:41:53,494 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:41:53,575 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:41:53,577 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:41:53,577 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:41:53,577 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:41:53,577 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:41:53,577 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:41:53,577 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:41:53,577 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:41:53,578 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:41:53,578 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 07:41:53,578 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:41:53,578 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:41:53,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:41:53,609 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:41:53,610 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:41:53,610 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 [2018-11-10 07:41:53,610 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:41:53,610 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:41:53,611 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:41:53,611 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:41:53,611 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:41:53,611 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:41:53,612 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:41:53,614 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:41:53,616 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 07:41:53,616 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-10 07:41:53,617 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:41:53,617 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:41:53,617 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:41:53,617 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-10 07:41:53,618 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:41:53,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:53,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:41:53,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:41:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:41:53,658 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 [2018-11-10 07:41:53,659 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 79 transitions. cyclomatic complexity: 27 Second operand 4 states. [2018-11-10 07:41:53,675 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 79 transitions. cyclomatic complexity: 27. Second operand 4 states. Result 121 states and 150 transitions. Complement of second has 7 states. [2018-11-10 07:41:53,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:41:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:41:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-10 07:41:53,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 07:41:53,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:53,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-10 07:41:53,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:53,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-10 07:41:53,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:41:53,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 150 transitions. [2018-11-10 07:41:53,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-10 07:41:53,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 88 states and 111 transitions. [2018-11-10 07:41:53,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2018-11-10 07:41:53,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-10 07:41:53,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 111 transitions. [2018-11-10 07:41:53,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:53,680 INFO L705 BuchiCegarLoop]: Abstraction has 88 states and 111 transitions. [2018-11-10 07:41:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 111 transitions. [2018-11-10 07:41:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2018-11-10 07:41:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-10 07:41:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2018-11-10 07:41:53,684 INFO L728 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2018-11-10 07:41:53,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:41:53,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:41:53,685 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 3 states. [2018-11-10 07:41:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:41:53,711 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2018-11-10 07:41:53,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:41:53,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 84 transitions. [2018-11-10 07:41:53,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-10 07:41:53,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 63 states and 77 transitions. [2018-11-10 07:41:53,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2018-11-10 07:41:53,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-11-10 07:41:53,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 77 transitions. [2018-11-10 07:41:53,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:41:53,713 INFO L705 BuchiCegarLoop]: Abstraction has 63 states and 77 transitions. [2018-11-10 07:41:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 77 transitions. [2018-11-10 07:41:53,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2018-11-10 07:41:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 07:41:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2018-11-10 07:41:53,716 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2018-11-10 07:41:53,716 INFO L608 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2018-11-10 07:41:53,716 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 07:41:53,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 58 transitions. [2018-11-10 07:41:53,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-10 07:41:53,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:41:53,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:41:53,717 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-10 07:41:53,717 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1, 1, 1] [2018-11-10 07:41:53,718 INFO L793 eck$LassoCheckResult]: Stem: 1125#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1123#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 1124#L19-2 assume true; 1139#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 1132#L14 assume !(main_~i~0 < main_~j~0); 1135#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 1136#L19-2 assume true; 1156#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 1137#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 1126#L19-2 [2018-11-10 07:41:53,718 INFO L795 eck$LassoCheckResult]: Loop: 1126#L19-2 assume true; 1127#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 1130#L14 assume !(main_~i~0 < main_~j~0); 1133#L19 assume main_~i~0 > main_~j~0;main_~j~0 := main_~i~0; 1134#L19-2 assume true; 1168#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 1166#L14 assume !(main_~i~0 < main_~j~0); 1163#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 1164#L19-2 assume true; 1167#L13-1 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 1165#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 1126#L19-2 [2018-11-10 07:41:53,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,718 INFO L82 PathProgramCache]: Analyzing trace with hash 384105883, now seen corresponding path program 2 times [2018-11-10 07:41:53,718 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:53,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:53,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:41:53,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1098593940, now seen corresponding path program 1 times [2018-11-10 07:41:53,725 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:53,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:53,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:41:53,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:41:53,733 INFO L82 PathProgramCache]: Analyzing trace with hash -446458694, now seen corresponding path program 1 times [2018-11-10 07:41:53,733 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:41:53,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:41:53,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:41:53,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:41:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:41:53,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 07:41:53 BoogieIcfgContainer [2018-11-10 07:41:53,832 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 07:41:53,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:41:53,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:41:53,833 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:41:53,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:41:50" (3/4) ... [2018-11-10 07:41:53,836 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-10 07:41:53,868 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_172698d4-558e-4483-af3e-4941c6251ae4/bin-2019/uautomizer/witness.graphml [2018-11-10 07:41:53,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:41:53,869 INFO L168 Benchmark]: Toolchain (without parser) took 3772.28 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 237.0 MB). Free memory was 959.2 MB in the beginning and 1.2 GB in the end (delta: -251.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:41:53,870 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:41:53,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.05 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:41:53,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.74 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:41:53,871 INFO L168 Benchmark]: Boogie Preprocessor took 15.71 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:41:53,871 INFO L168 Benchmark]: RCFGBuilder took 190.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -219.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:41:53,871 INFO L168 Benchmark]: BuchiAutomizer took 3368.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.9 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -47.7 MB). Peak memory consumption was 323.8 MB. Max. memory is 11.5 GB. [2018-11-10 07:41:53,872 INFO L168 Benchmark]: Witness Printer took 35.48 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. [2018-11-10 07:41:53,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 132.05 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 26.74 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.71 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 190.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -219.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3368.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.9 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -47.7 MB). Peak memory consumption was 323.8 MB. Max. memory is 11.5 GB. * Witness Printer took 35.48 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 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 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i + -1 * j and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 46 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 90 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 62 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 20 SDs, 0 SdLazy, 77 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax176 hnf97 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf92 smp100 dnf100 smp100 tf109 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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 {t=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@485bcff8=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76076349=0, i=2, j=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...