./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 32bit --witnessprinter.graph.data.programhash 37028c56b7915050ee6a79b5e737b9e44bf7c3db ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 08:34:10,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 08:34:10,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 08:34:10,477 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 08:34:10,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 08:34:10,478 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 08:34:10,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 08:34:10,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 08:34:10,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 08:34:10,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 08:34:10,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 08:34:10,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 08:34:10,484 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 08:34:10,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 08:34:10,486 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 08:34:10,486 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 08:34:10,487 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 08:34:10,489 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 08:34:10,490 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 08:34:10,491 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 08:34:10,492 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 08:34:10,493 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 08:34:10,495 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 08:34:10,495 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 08:34:10,495 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 08:34:10,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 08:34:10,497 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 08:34:10,498 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 08:34:10,498 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 08:34:10,499 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 08:34:10,499 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 08:34:10,500 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 08:34:10,500 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 08:34:10,500 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 08:34:10,501 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 08:34:10,502 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 08:34:10,502 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-23 08:34:10,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 08:34:10,514 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 08:34:10,515 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 08:34:10,515 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 08:34:10,515 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 08:34:10,515 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 08:34:10,515 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 08:34:10,515 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 08:34:10,515 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 08:34:10,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 08:34:10,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 08:34:10,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 08:34:10,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 08:34:10,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 08:34:10,518 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 08:34:10,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 08:34:10,518 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 08:34:10,518 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 08:34:10,519 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 08:34:10,519 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_7949cd0c-f7de-428d-b81b-feebc99b2433/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2018-11-23 08:34:10,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 08:34:10,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 08:34:10,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 08:34:10,559 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 08:34:10,560 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 08:34:10,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-23 08:34:10,612 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/data/42686b7f3/717229e8a6cc4966977fe83b3dd4d8cf/FLAG117df35dc [2018-11-23 08:34:10,939 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 08:34:10,939 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-23 08:34:10,943 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/data/42686b7f3/717229e8a6cc4966977fe83b3dd4d8cf/FLAG117df35dc [2018-11-23 08:34:11,370 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/data/42686b7f3/717229e8a6cc4966977fe83b3dd4d8cf [2018-11-23 08:34:11,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 08:34:11,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 08:34:11,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 08:34:11,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 08:34:11,378 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 08:34:11,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491d3a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11, skipping insertion in model container [2018-11-23 08:34:11,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 08:34:11,407 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 08:34:11,563 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:34:11,566 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 08:34:11,579 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:34:11,591 INFO L195 MainTranslator]: Completed translation [2018-11-23 08:34:11,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11 WrapperNode [2018-11-23 08:34:11,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 08:34:11,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 08:34:11,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 08:34:11,592 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 08:34:11,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 08:34:11,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 08:34:11,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 08:34:11,615 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 08:34:11,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2018-11-23 08:34:11,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 08:34:11,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 08:34:11,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 08:34:11,627 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 08:34:11,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 08:34:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 08:34:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-23 08:34:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-23 08:34:11,824 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 08:34:11,825 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 08:34:11,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:11 BoogieIcfgContainer [2018-11-23 08:34:11,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 08:34:11,825 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 08:34:11,826 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 08:34:11,828 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 08:34:11,828 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:34:11,828 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 08:34:11" (1/3) ... [2018-11-23 08:34:11,829 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ce5c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 08:34:11, skipping insertion in model container [2018-11-23 08:34:11,829 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:34:11,829 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (2/3) ... [2018-11-23 08:34:11,829 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ce5c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 08:34:11, skipping insertion in model container [2018-11-23 08:34:11,830 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:34:11,830 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:11" (3/3) ... [2018-11-23 08:34:11,831 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-23 08:34:11,867 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 08:34:11,867 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 08:34:11,867 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 08:34:11,867 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 08:34:11,868 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 08:34:11,868 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 08:34:11,868 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 08:34:11,868 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 08:34:11,868 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 08:34:11,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-23 08:34:11,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:34:11,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:34:11,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:34:11,903 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 08:34:11,903 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:34:11,903 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 08:34:11,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-23 08:34:11,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:34:11,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:34:11,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:34:11,905 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 08:34:11,905 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:34:11,912 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 16#f91ENTRYtrue [2018-11-23 08:34:11,913 INFO L796 eck$LassoCheckResult]: Loop: 16#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 16#f91ENTRYtrue [2018-11-23 08:34:11,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:11,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2018-11-23 08:34:11,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:11,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:11,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:11,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:11,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:11,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:11,978 INFO L82 PathProgramCache]: Analyzing trace with hash 43828, now seen corresponding path program 1 times [2018-11-23 08:34:11,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:11,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:11,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:11,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:11,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:11,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash 30251902, now seen corresponding path program 1 times [2018-11-23 08:34:11,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:11,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:11,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:11,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:11,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,065 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:12,066 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:12,066 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:12,066 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:12,066 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:34:12,067 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:12,067 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:12,067 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:12,067 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-23 08:34:12,067 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:12,067 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:12,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,170 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:12,171 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:12,174 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:12,175 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:12,180 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:12,180 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:12,206 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:12,206 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:12,208 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:12,208 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:12,224 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:12,224 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:12,242 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:34:12,242 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:12,260 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:34:12,261 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:12,261 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:12,261 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:12,261 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:12,261 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:34:12,261 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:12,261 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:12,261 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:12,262 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-23 08:34:12,262 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:12,262 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:12,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,332 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:12,337 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:34:12,339 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 [2018-11-23 08:34:12,340 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:12,340 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:12,341 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:12,341 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:12,341 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:12,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:12,343 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:12,347 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:12,347 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 [2018-11-23 08:34:12,348 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:12,348 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:12,348 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:12,349 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:12,349 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:12,349 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:12,349 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:12,351 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:12,351 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 [2018-11-23 08:34:12,352 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:12,352 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:12,352 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:12,352 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:12,352 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:12,353 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:12,353 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:12,359 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:34:12,363 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:34:12,363 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 08:34:12,365 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:34:12,365 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:34:12,366 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:34:12,366 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-11-23 08:34:12,367 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:34:12,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:12,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:12,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:12,486 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 [2018-11-23 08:34:12,487 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 4 states. [2018-11-23 08:34:12,584 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 4 states. Result 33 states and 41 transitions. Complement of second has 12 states. [2018-11-23 08:34:12,584 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 [2018-11-23 08:34:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:34:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-23 08:34:12,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-23 08:34:12,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:12,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 08:34:12,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:12,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-23 08:34:12,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:12,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2018-11-23 08:34:12,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:34:12,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 18 states and 24 transitions. [2018-11-23 08:34:12,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-23 08:34:12,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-23 08:34:12,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-23 08:34:12,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:34:12,599 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-23 08:34:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-23 08:34:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-23 08:34:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 08:34:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-11-23 08:34:12,620 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-23 08:34:12,620 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-23 08:34:12,620 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 08:34:12,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2018-11-23 08:34:12,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:34:12,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:34:12,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:34:12,622 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:34:12,622 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 08:34:12,622 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 99#L26 call main_#t~ret3 := f91(main_~x~0);< 104#f91ENTRY ~x := #in~x; 109#L16 assume !(~x > 100); 100#L19 call #t~ret0 := f91(11 + ~x);< 107#f91ENTRY ~x := #in~x; 110#L16 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 111#f91EXIT >#26#return; 101#L19-1 [2018-11-23 08:34:12,623 INFO L796 eck$LassoCheckResult]: Loop: 101#L19-1 call #t~ret1 := f91(#t~ret0);< 106#f91ENTRY ~x := #in~x; 113#L16 assume !(~x > 100); 102#L19 call #t~ret0 := f91(11 + ~x);< 106#f91ENTRY ~x := #in~x; 113#L16 assume ~x > 100;#res := ~x - 10; 103#f91FINAL assume true; 108#f91EXIT >#26#return; 101#L19-1 [2018-11-23 08:34:12,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:12,623 INFO L82 PathProgramCache]: Analyzing trace with hash -495039419, now seen corresponding path program 1 times [2018-11-23 08:34:12,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:12,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:12,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:12,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:12,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 1 times [2018-11-23 08:34:12,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:12,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:12,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:12,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:12,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:12,643 INFO L82 PathProgramCache]: Analyzing trace with hash -984000794, now seen corresponding path program 1 times [2018-11-23 08:34:12,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:12,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:12,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:12,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:12,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:12,736 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:12,736 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:12,736 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:12,736 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:12,736 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:34:12,736 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:12,736 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:12,736 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:12,736 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-23 08:34:12,737 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:12,737 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:12,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:12,779 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:12,779 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:12,790 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:12,790 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:12,812 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:34:12,812 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:24,854 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 08:34:24,857 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:24,857 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:24,858 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:24,858 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:24,858 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:34:24,858 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:24,858 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:24,859 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:24,859 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-23 08:34:24,859 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:24,859 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:24,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:24,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:24,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:24,913 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:24,913 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:34:24,914 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 [2018-11-23 08:34:24,914 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:24,915 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:24,915 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:24,915 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:24,915 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:24,917 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:24,917 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:24,925 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:34:24,931 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:34:24,931 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 08:34:24,932 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:34:24,932 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:34:24,932 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:34:24,932 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-23 08:34:24,933 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:34:24,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:24,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:25,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:25,098 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 08:34:25,098 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-11-23 08:34:25,284 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 50 states and 72 transitions. Complement of second has 32 states. [2018-11-23 08:34:25,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 08:34:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-23 08:34:25,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-23 08:34:25,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:25,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 17 letters. Loop has 8 letters. [2018-11-23 08:34:25,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:25,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 16 letters. [2018-11-23 08:34:25,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:25,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 72 transitions. [2018-11-23 08:34:25,295 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-23 08:34:25,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 61 transitions. [2018-11-23 08:34:25,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-23 08:34:25,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-23 08:34:25,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 61 transitions. [2018-11-23 08:34:25,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:34:25,298 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 61 transitions. [2018-11-23 08:34:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 61 transitions. [2018-11-23 08:34:25,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-11-23 08:34:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 08:34:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2018-11-23 08:34:25,304 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-23 08:34:25,305 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-23 08:34:25,305 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 08:34:25,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2018-11-23 08:34:25,306 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-23 08:34:25,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:34:25,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:34:25,307 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:34:25,307 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:34:25,307 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 289#L26 call main_#t~ret3 := f91(main_~x~0);< 290#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 281#L19 call #t~ret0 := f91(11 + ~x);< 297#f91ENTRY ~x := #in~x; 303#L16 assume ~x > 100;#res := ~x - 10; 310#f91FINAL assume true; 309#f91EXIT >#26#return; 285#L19-1 call #t~ret1 := f91(#t~ret0);< 294#f91ENTRY ~x := #in~x; 313#L16 assume !(~x > 100); 295#L19 [2018-11-23 08:34:25,307 INFO L796 eck$LassoCheckResult]: Loop: 295#L19 call #t~ret0 := f91(11 + ~x);< 296#f91ENTRY ~x := #in~x; 304#L16 assume !(~x > 100); 295#L19 [2018-11-23 08:34:25,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:25,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1198389434, now seen corresponding path program 2 times [2018-11-23 08:34:25,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:25,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:25,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:25,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:25,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:25,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:25,318 INFO L82 PathProgramCache]: Analyzing trace with hash 54268, now seen corresponding path program 2 times [2018-11-23 08:34:25,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:25,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:25,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:25,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:34:25,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:25,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1451488419, now seen corresponding path program 3 times [2018-11-23 08:34:25,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:25,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:25,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:25,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:34:25,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 08:34:25,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:34:25,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 08:34:25,417 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:25,417 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:25,417 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:25,417 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:25,417 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:34:25,417 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:25,417 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:25,418 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:25,418 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-23 08:34:25,418 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:25,418 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:25,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:25,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:25,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:25,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:25,449 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:25,450 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:25,455 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:25,455 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:25,458 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:25,458 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:25,477 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:25,477 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:25,479 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:25,480 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:25,499 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:25,499 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:25,501 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:25,501 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:25,520 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:25,521 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:25,546 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:34:25,546 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:37,570 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 08:34:37,573 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:37,573 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:37,573 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:37,573 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:37,573 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:34:37,574 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:37,574 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:37,574 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:37,574 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-23 08:34:37,574 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:37,574 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:37,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:37,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:37,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:37,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:37,598 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:37,598 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:34:37,599 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 [2018-11-23 08:34:37,600 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:37,600 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:37,600 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:37,600 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:37,600 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:37,601 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:37,601 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:37,602 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:37,602 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 [2018-11-23 08:34:37,602 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:37,602 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:37,602 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:37,603 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:37,603 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:37,603 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:37,603 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:37,603 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:37,604 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 [2018-11-23 08:34:37,604 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:37,604 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:37,604 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:37,604 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:37,604 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:37,605 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:37,605 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:37,605 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:37,605 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 [2018-11-23 08:34:37,606 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:37,606 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:37,606 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:37,606 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:37,606 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:37,607 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:37,607 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:37,610 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:34:37,612 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:34:37,612 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 08:34:37,613 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:34:37,613 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:34:37,613 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:34:37,613 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-11-23 08:34:37,613 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:34:37,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:37,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:37,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:37,678 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-23 08:34:37,678 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-23 08:34:37,732 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-11-23 08:34:37,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 08:34:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-23 08:34:37,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:34:37,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:37,736 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:34:37,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:37,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:37,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:37,806 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-23 08:34:37,807 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-23 08:34:37,847 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-11-23 08:34:37,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 08:34:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-23 08:34:37,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:34:37,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:37,849 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:34:37,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:37,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:37,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:37,925 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-23 08:34:37,925 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-23 08:34:37,979 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 70 states and 99 transitions. Complement of second has 16 states. [2018-11-23 08:34:37,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 08:34:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2018-11-23 08:34:37,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:34:37,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:37,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-23 08:34:37,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:37,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-23 08:34:37,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:37,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 99 transitions. [2018-11-23 08:34:37,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-23 08:34:37,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 47 states and 73 transitions. [2018-11-23 08:34:37,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-23 08:34:37,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-23 08:34:37,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2018-11-23 08:34:37,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:34:37,985 INFO L705 BuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2018-11-23 08:34:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2018-11-23 08:34:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2018-11-23 08:34:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 08:34:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2018-11-23 08:34:37,990 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2018-11-23 08:34:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 08:34:37,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 08:34:37,993 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 8 states. [2018-11-23 08:34:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:34:38,059 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-11-23 08:34:38,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 08:34:38,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2018-11-23 08:34:38,061 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-23 08:34:38,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 74 transitions. [2018-11-23 08:34:38,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-23 08:34:38,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-23 08:34:38,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 74 transitions. [2018-11-23 08:34:38,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:34:38,063 INFO L705 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-23 08:34:38,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 74 transitions. [2018-11-23 08:34:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-23 08:34:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-23 08:34:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2018-11-23 08:34:38,067 INFO L728 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-11-23 08:34:38,067 INFO L608 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-11-23 08:34:38,067 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 08:34:38,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2018-11-23 08:34:38,068 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-23 08:34:38,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:34:38,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:34:38,069 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-23 08:34:38,069 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-11-23 08:34:38,070 INFO L794 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 812#L26 call main_#t~ret3 := f91(main_~x~0);< 813#f91ENTRY ~x := #in~x; 834#L16 assume !(~x > 100); 835#L19 call #t~ret0 := f91(11 + ~x);< 841#f91ENTRY ~x := #in~x; 844#L16 assume !(~x > 100); 839#L19 call #t~ret0 := f91(11 + ~x);< 842#f91ENTRY ~x := #in~x; 845#L16 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 840#f91EXIT >#26#return; 810#L19-1 call #t~ret1 := f91(#t~ret0);< 817#f91ENTRY ~x := #in~x; 859#L16 assume ~x > 100;#res := ~x - 10; 858#f91FINAL assume true; 855#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 848#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-11-23 08:34:38,070 INFO L796 eck$LassoCheckResult]: Loop: 851#f91ENTRY ~x := #in~x; 846#L16 assume !(~x > 100); 821#L19 call #t~ret0 := f91(11 + ~x);< 822#f91ENTRY ~x := #in~x; 830#L16 assume !(~x > 100); 820#L19 call #t~ret0 := f91(11 + ~x);< 823#f91ENTRY ~x := #in~x; 829#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 831#f91EXIT >#26#return; 807#L19-1 call #t~ret1 := f91(#t~ret0);< 815#f91ENTRY ~x := #in~x; 850#L16 assume ~x > 100;#res := ~x - 10; 824#f91FINAL assume true; 825#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 847#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-11-23 08:34:38,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash 803701992, now seen corresponding path program 1 times [2018-11-23 08:34:38,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:38,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:38,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:38,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:34:38,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:38,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:38,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1260361570, now seen corresponding path program 1 times [2018-11-23 08:34:38,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:38,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:38,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:38,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:38,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:38,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash 187356247, now seen corresponding path program 2 times [2018-11-23 08:34:38,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:38,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:38,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:38,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:34:38,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-23 08:34:38,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 08:34:38,138 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 08:34:38,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 08:34:38,165 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 08:34:38,165 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 08:34:38,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-23 08:34:38,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 08:34:38,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-23 08:34:38,334 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:38,334 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:38,334 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:38,334 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:38,334 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:34:38,334 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:38,334 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:38,335 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:38,335 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-23 08:34:38,335 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:38,335 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:38,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,364 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:38,364 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:38,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:38,378 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:38,381 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:38,381 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/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 [2018-11-23 08:34:38,404 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:38,404 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:38,406 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:38,406 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:38,421 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:38,422 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:38,423 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:38,423 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:38,439 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:38,439 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:38,440 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:38,440 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:38,456 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:38,456 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:38,474 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:34:38,474 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:38,796 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:34:38,797 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:38,798 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:38,798 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:38,798 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:38,798 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:34:38,798 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:38,798 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:38,798 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:38,798 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-23 08:34:38,798 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:38,798 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:38,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:38,818 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:38,818 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:34:38,818 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 [2018-11-23 08:34:38,819 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:38,819 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:38,819 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:38,819 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:38,819 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:38,820 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:38,820 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:38,820 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:38,821 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 [2018-11-23 08:34:38,821 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:38,821 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:38,821 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:38,821 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:38,822 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:38,822 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:38,822 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:38,823 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:38,823 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 [2018-11-23 08:34:38,823 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:38,823 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:38,823 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:38,824 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:38,824 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:38,824 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:38,824 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:38,825 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:38,825 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 [2018-11-23 08:34:38,825 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:38,825 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:38,825 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:38,826 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:38,826 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:38,826 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:38,826 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:38,827 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:34:38,827 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 [2018-11-23 08:34:38,827 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:38,827 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:38,828 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:38,828 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:38,828 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:38,828 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:38,828 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:38,831 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:34:38,832 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:34:38,832 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 08:34:38,832 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:34:38,833 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:34:38,833 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:34:38,833 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-11-23 08:34:38,833 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:34:38,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:38,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:38,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 08:34:39,022 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-23 08:34:39,023 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-23 08:34:39,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-11-23 08:34:39,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 08:34:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-11-23 08:34:39,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-23 08:34:39,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:39,356 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:34:39,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:39,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:39,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 08:34:39,518 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-23 08:34:39,518 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-23 08:34:39,776 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-11-23 08:34:39,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 08:34:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-11-23 08:34:39,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-23 08:34:39,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:39,778 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:34:39,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:39,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:39,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 08:34:39,923 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-23 08:34:39,923 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-23 08:34:40,404 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 430 states and 530 transitions. Complement of second has 216 states. [2018-11-23 08:34:40,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 08:34:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 48 transitions. [2018-11-23 08:34:40,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-23 08:34:40,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:40,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 40 letters. Loop has 19 letters. [2018-11-23 08:34:40,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:40,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 38 letters. [2018-11-23 08:34:40,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:40,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 530 transitions. [2018-11-23 08:34:40,414 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-11-23 08:34:40,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 202 states and 268 transitions. [2018-11-23 08:34:40,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2018-11-23 08:34:40,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2018-11-23 08:34:40,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 268 transitions. [2018-11-23 08:34:40,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:34:40,419 INFO L705 BuchiCegarLoop]: Abstraction has 202 states and 268 transitions. [2018-11-23 08:34:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 268 transitions. [2018-11-23 08:34:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 156. [2018-11-23 08:34:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-11-23 08:34:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2018-11-23 08:34:40,430 INFO L728 BuchiCegarLoop]: Abstraction has 156 states and 197 transitions. [2018-11-23 08:34:40,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 08:34:40,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-23 08:34:40,430 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand 9 states. [2018-11-23 08:34:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:34:40,573 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2018-11-23 08:34:40,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 08:34:40,575 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 187 transitions. [2018-11-23 08:34:40,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-23 08:34:40,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 103 states and 122 transitions. [2018-11-23 08:34:40,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2018-11-23 08:34:40,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-23 08:34:40,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 122 transitions. [2018-11-23 08:34:40,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:34:40,580 INFO L705 BuchiCegarLoop]: Abstraction has 103 states and 122 transitions. [2018-11-23 08:34:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 122 transitions. [2018-11-23 08:34:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-11-23 08:34:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-23 08:34:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-11-23 08:34:40,587 INFO L728 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-11-23 08:34:40,587 INFO L608 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-11-23 08:34:40,587 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 08:34:40,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2018-11-23 08:34:40,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-23 08:34:40,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:34:40,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:34:40,589 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2018-11-23 08:34:40,589 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 08:34:40,589 INFO L794 eck$LassoCheckResult]: Stem: 2797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2789#L26 call main_#t~ret3 := f91(main_~x~0);< 2790#f91ENTRY ~x := #in~x; 2818#L16 assume !(~x > 100); 2814#L19 call #t~ret0 := f91(11 + ~x);< 2813#f91ENTRY ~x := #in~x; 2816#L16 assume !(~x > 100); 2815#L19 call #t~ret0 := f91(11 + ~x);< 2847#f91ENTRY ~x := #in~x; 2850#L16 assume ~x > 100;#res := ~x - 10; 2849#f91FINAL assume true; 2848#f91EXIT >#26#return; 2843#L19-1 call #t~ret1 := f91(#t~ret0);< 2845#f91ENTRY ~x := #in~x; 2865#L16 assume ~x > 100;#res := ~x - 10; 2851#f91FINAL assume true; 2842#f91EXIT >#28#return; 2841#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 2839#f91FINAL assume true; 2838#f91EXIT >#26#return; 2832#L19-1 call #t~ret1 := f91(#t~ret0);< 2837#f91ENTRY ~x := #in~x; 2835#L16 assume !(~x > 100); 2799#L19 call #t~ret0 := f91(11 + ~x);< 2807#f91ENTRY ~x := #in~x; 2840#L16 assume !(~x > 100); 2800#L19 call #t~ret0 := f91(11 + ~x);< 2806#f91ENTRY ~x := #in~x; 2882#L16 assume ~x > 100;#res := ~x - 10; 2881#f91FINAL assume true; 2878#f91EXIT >#26#return; 2798#L19-1 [2018-11-23 08:34:40,589 INFO L796 eck$LassoCheckResult]: Loop: 2798#L19-1 call #t~ret1 := f91(#t~ret0);< 2801#f91ENTRY ~x := #in~x; 2830#L16 assume !(~x > 100); 2831#L19 call #t~ret0 := f91(11 + ~x);< 2879#f91ENTRY ~x := #in~x; 2886#L16 assume ~x > 100;#res := ~x - 10; 2885#f91FINAL assume true; 2877#f91EXIT >#26#return; 2798#L19-1 [2018-11-23 08:34:40,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:40,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1994701169, now seen corresponding path program 3 times [2018-11-23 08:34:40,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:40,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:40,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:40,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:34:40,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 08:34:40,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 08:34:40,659 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 08:34:40,666 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 08:34:40,691 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 08:34:40,691 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 08:34:40,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-23 08:34:40,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 08:34:40,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-23 08:34:40,712 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 08:34:40,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 2 times [2018-11-23 08:34:40,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:34:40,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:34:40,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:40,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:34:40,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:34:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:34:40,773 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:40,773 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:40,774 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:40,774 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:40,774 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:34:40,774 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:40,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:40,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:40,774 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-23 08:34:40,774 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:40,774 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:40,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:40,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:40,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:40,798 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:40,798 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:40,800 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:40,800 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:40,802 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:40,802 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:40,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:40,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:40,820 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:34:40,820 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:40,837 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:34:40,837 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7949cd0c-f7de-428d-b81b-feebc99b2433/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:40,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:34:40,860 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:34:52,894 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 08:34:52,898 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:34:52,898 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:34:52,898 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:34:52,898 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:34:52,898 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:34:52,898 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:34:52,898 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:34:52,898 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:34:52,899 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-23 08:34:52,899 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:34:52,899 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:34:52,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:52,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:52,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:34:52,937 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:34:52,938 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:34:52,938 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 [2018-11-23 08:34:52,938 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:34:52,939 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:34:52,939 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:34:52,939 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:34:52,939 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:34:52,940 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:34:52,940 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:34:52,944 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:34:52,947 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:34:52,947 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 08:34:52,947 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:34:52,947 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:34:52,948 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:34:52,948 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-23 08:34:52,948 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:34:52,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:52,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:53,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:53,083 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 08:34:53,083 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-23 08:34:53,216 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-11-23 08:34:53,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 08:34:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-23 08:34:53,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-23 08:34:53,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:53,218 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:34:53,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:53,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:53,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:53,327 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 08:34:53,327 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-23 08:34:53,444 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-11-23 08:34:53,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 08:34:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-23 08:34:53,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-23 08:34:53,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:53,451 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:34:53,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:34:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:53,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:34:53,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:34:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:34:53,566 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 08:34:53,566 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-23 08:34:53,721 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 180 states and 210 transitions. Complement of second has 27 states. [2018-11-23 08:34:53,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 08:34:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 08:34:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2018-11-23 08:34:53,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-23 08:34:53,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:53,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 39 letters. Loop has 8 letters. [2018-11-23 08:34:53,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:53,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 16 letters. [2018-11-23 08:34:53,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:34:53,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 210 transitions. [2018-11-23 08:34:53,728 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:34:53,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2018-11-23 08:34:53,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 08:34:53,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 08:34:53,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 08:34:53,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 08:34:53,729 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:34:53,729 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:34:53,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 08:34:53,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-23 08:34:53,730 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-23 08:34:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:34:53,730 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-23 08:34:53,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 08:34:53,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-23 08:34:53,731 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:34:53,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 08:34:53,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 08:34:53,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 08:34:53,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 08:34:53,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 08:34:53,731 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:34:53,731 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:34:53,731 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:34:53,732 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 08:34:53,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 08:34:53,732 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:34:53,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 08:34:53,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 08:34:53 BoogieIcfgContainer [2018-11-23 08:34:53,739 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 08:34:53,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 08:34:53,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 08:34:53,739 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 08:34:53,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:11" (3/4) ... [2018-11-23 08:34:53,744 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 08:34:53,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 08:34:53,745 INFO L168 Benchmark]: Toolchain (without parser) took 42370.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 278.9 MB). Free memory was 961.1 MB in the beginning and 821.9 MB in the end (delta: 139.2 MB). Peak memory consumption was 418.1 MB. Max. memory is 11.5 GB. [2018-11-23 08:34:53,746 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:34:53,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.73 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:34:53,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.31 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 945.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 08:34:53,748 INFO L168 Benchmark]: Boogie Preprocessor took 11.81 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:34:53,748 INFO L168 Benchmark]: RCFGBuilder took 198.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 08:34:53,749 INFO L168 Benchmark]: BuchiAutomizer took 41913.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 130.0 MB). Free memory was 1.1 GB in the beginning and 821.9 MB in the end (delta: 306.8 MB). Peak memory consumption was 436.8 MB. Max. memory is 11.5 GB. [2018-11-23 08:34:53,750 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 1.3 GB. Free memory is still 821.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:34:53,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.73 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 950.4 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 22.31 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 945.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.81 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 198.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41913.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 130.0 MB). Free memory was 1.1 GB in the beginning and 821.9 MB in the end (delta: 306.8 MB). Peak memory consumption was 436.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.06 ms. Allocated memory is still 1.3 GB. Free memory is still 821.9 MB. There was no memory consumed. 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 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.8s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.2s. Construction of modules took 0.5s. Büchi inclusion checks took 2.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 99 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 155 SDtfs, 273 SDslu, 162 SDs, 0 SdLazy, 735 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...