./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 a755472942b72da612d26a2f3af20ed4332f07b5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-09 23:33:32,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 23:33:32,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 23:33:32,163 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 23:33:32,164 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 23:33:32,164 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 23:33:32,165 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 23:33:32,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 23:33:32,167 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 23:33:32,169 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 23:33:32,169 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 23:33:32,169 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 23:33:32,170 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 23:33:32,170 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 23:33:32,171 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 23:33:32,171 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 23:33:32,172 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 23:33:32,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 23:33:32,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 23:33:32,175 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 23:33:32,176 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 23:33:32,177 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 23:33:32,179 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 23:33:32,179 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 23:33:32,179 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 23:33:32,180 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 23:33:32,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 23:33:32,181 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 23:33:32,181 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 23:33:32,182 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 23:33:32,182 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 23:33:32,182 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 23:33:32,182 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 23:33:32,182 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 23:33:32,183 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 23:33:32,183 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 23:33:32,183 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-09 23:33:32,193 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 23:33:32,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 23:33:32,194 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 23:33:32,194 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 23:33:32,194 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 23:33:32,194 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-09 23:33:32,195 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-09 23:33:32,195 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-09 23:33:32,195 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-09 23:33:32,195 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-09 23:33:32,195 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-09 23:33:32,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 23:33:32,195 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 23:33:32,196 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-09 23:33:32,196 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 23:33:32,196 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 23:33:32,197 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 23:33:32,197 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-09 23:33:32,197 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-09 23:33:32,197 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-09 23:33:32,198 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 23:33:32,198 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 23:33:32,198 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-09 23:33:32,198 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-09 23:33:32,198 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 23:33:32,198 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 23:33:32,198 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-09 23:33:32,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 23:33:32,199 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-09 23:33:32,199 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-09 23:33:32,200 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-09 23:33:32,200 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_71ea1519-8f30-4375-8baf-a961f3977aeb/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 -> a755472942b72da612d26a2f3af20ed4332f07b5 [2018-11-09 23:33:32,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 23:33:32,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 23:33:32,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 23:33:32,237 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 23:33:32,237 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 23:33:32,238 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:33:32,278 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/data/037c8f659/1584e686493a4b9ba0cff682385b3d71/FLAGb7a487c86 [2018-11-09 23:33:32,611 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 23:33:32,612 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/sv-benchmarks/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:33:32,617 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/data/037c8f659/1584e686493a4b9ba0cff682385b3d71/FLAGb7a487c86 [2018-11-09 23:33:32,628 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/data/037c8f659/1584e686493a4b9ba0cff682385b3d71 [2018-11-09 23:33:32,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 23:33:32,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-09 23:33:32,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 23:33:32,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 23:33:32,635 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 23:33:32,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d14c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32, skipping insertion in model container [2018-11-09 23:33:32,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 23:33:32,662 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 23:33:32,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:33:32,776 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 23:33:32,785 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:33:32,793 INFO L193 MainTranslator]: Completed translation [2018-11-09 23:33:32,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32 WrapperNode [2018-11-09 23:33:32,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 23:33:32,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-09 23:33:32,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-09 23:33:32,794 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-09 23:33:32,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-09 23:33:32,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 23:33:32,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 23:33:32,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 23:33:32,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... [2018-11-09 23:33:32,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 23:33:32,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 23:33:32,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 23:33:32,820 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 23:33:32,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2018-11-09 23:33:32,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2018-11-09 23:33:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 23:33:32,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 23:33:32,997 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 23:33:32,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:33:32 BoogieIcfgContainer [2018-11-09 23:33:32,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 23:33:32,998 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-09 23:33:32,998 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-09 23:33:33,000 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-09 23:33:33,001 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 23:33:33,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 11:33:32" (1/3) ... [2018-11-09 23:33:33,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17206c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 11:33:33, skipping insertion in model container [2018-11-09 23:33:33,002 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 23:33:33,002 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:33:32" (2/3) ... [2018-11-09 23:33:33,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17206c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 11:33:33, skipping insertion in model container [2018-11-09 23:33:33,002 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 23:33:33,002 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:33:32" (3/3) ... [2018-11-09 23:33:33,003 INFO L375 chiAutomizerObserver]: Analyzing ICFG MultCommutative_true-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:33:33,045 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 23:33:33,046 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-09 23:33:33,046 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-09 23:33:33,046 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-09 23:33:33,046 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 23:33:33,046 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 23:33:33,046 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-09 23:33:33,046 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 23:33:33,046 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-09 23:33:33,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2018-11-09 23:33:33,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-09 23:33:33,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:33:33,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:33:33,082 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-09 23:33:33,082 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:33:33,082 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-09 23:33:33,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2018-11-09 23:33:33,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-09 23:33:33,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:33:33,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:33:33,085 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-09 23:33:33,085 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:33:33,092 INFO L793 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 11#L31true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 17#L34true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2018-11-09 23:33:33,092 INFO L795 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 6#L16true assume ~m < 0; 3#L17true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2018-11-09 23:33:33,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,097 INFO L82 PathProgramCache]: Analyzing trace with hash 42056133, now seen corresponding path program 1 times [2018-11-09 23:33:33,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:33,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:33,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:33,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,164 INFO L82 PathProgramCache]: Analyzing trace with hash 29925, now seen corresponding path program 1 times [2018-11-09 23:33:33,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:33,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:33,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:33,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1236192095, now seen corresponding path program 1 times [2018-11-09 23:33:33,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:33,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:33,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:33,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:33,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 23:33:33,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-09 23:33:33,284 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:33,285 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:33,285 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:33,285 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:33,285 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:33:33,285 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:33,285 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:33,286 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:33,286 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-09 23:33:33,286 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:33,286 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:33,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,383 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:33,384 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,388 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,388 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,393 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:33,393 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,409 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,409 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,412 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:33,412 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,428 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,428 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,431 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:33,431 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,446 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,447 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,449 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:33,449 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,464 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,464 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,467 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:33,467 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,482 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,482 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,484 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:33,484 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,500 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:33,500 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:33,517 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:33:33,518 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:33,538 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:33:33,539 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:33,540 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:33,540 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:33,540 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:33,540 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:33:33,540 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:33,540 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:33,540 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:33,540 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-09 23:33:33,540 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:33,540 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:33,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:33,606 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:33,610 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:33:33,612 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 [2018-11-09 23:33:33,613 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,613 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,614 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,614 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,614 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,616 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,616 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,617 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:33,618 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 [2018-11-09 23:33:33,618 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,618 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,619 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,619 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,619 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,619 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,619 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,620 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:33,621 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 [2018-11-09 23:33:33,621 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,621 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,622 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,622 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,622 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,622 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,622 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,623 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:33,624 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 [2018-11-09 23:33:33,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,624 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,625 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,625 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,625 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,626 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:33,627 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 [2018-11-09 23:33:33,627 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,627 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,627 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,628 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,628 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,628 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,628 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,629 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:33,630 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 [2018-11-09 23:33:33,630 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,630 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,630 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,630 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,630 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,631 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,631 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,632 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:33,633 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 [2018-11-09 23:33:33,633 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:33,633 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:33,633 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:33,633 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:33,634 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:33,634 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:33,634 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:33,639 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:33:33,641 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-09 23:33:33,641 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:33:33,642 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:33:33,642 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:33:33,642 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:33:33,643 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-11-09 23:33:33,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:33:33,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:33,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:33,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:33,728 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 [2018-11-09 23:33:33,729 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 4 states. [2018-11-09 23:33:33,838 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 4 states. Result 51 states and 66 transitions. Complement of second has 12 states. [2018-11-09 23:33:33,838 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 [2018-11-09 23:33:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 23:33:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-09 23:33:33,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-09 23:33:33,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:33,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-09 23:33:33,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:33,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-09 23:33:33,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:33,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2018-11-09 23:33:33,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-09 23:33:33,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 32 states and 45 transitions. [2018-11-09 23:33:33,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-09 23:33:33,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-09 23:33:33,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 45 transitions. [2018-11-09 23:33:33,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:33:33,858 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 45 transitions. [2018-11-09 23:33:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 45 transitions. [2018-11-09 23:33:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-09 23:33:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-09 23:33:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2018-11-09 23:33:33,888 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2018-11-09 23:33:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-09 23:33:33,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-09 23:33:33,891 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2018-11-09 23:33:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 23:33:33,956 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2018-11-09 23:33:33,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-09 23:33:33,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-09 23:33:33,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-09 23:33:33,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 34 transitions. [2018-11-09 23:33:33,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2018-11-09 23:33:33,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-09 23:33:33,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2018-11-09 23:33:33,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:33:33,960 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2018-11-09 23:33:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2018-11-09 23:33:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-11-09 23:33:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-09 23:33:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-09 23:33:33,963 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-09 23:33:33,963 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-09 23:33:33,963 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-09 23:33:33,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-11-09 23:33:33,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-09 23:33:33,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:33:33,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:33:33,965 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 23:33:33,965 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:33:33,965 INFO L793 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 204#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 205#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 199#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 198#multENTRY ~n := #in~n;~m := #in~m; 200#L16 assume !(~m < 0); 201#L19 assume !(~m == 0); 196#L22 call #t~ret1 := mult(~n, ~m - 1);< 197#multENTRY [2018-11-09 23:33:33,965 INFO L795 eck$LassoCheckResult]: Loop: 197#multENTRY ~n := #in~n;~m := #in~m; 213#L16 assume ~m < 0; 193#L17 call #t~ret0 := mult(~n, -~m);< 197#multENTRY [2018-11-09 23:33:33,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 332752684, now seen corresponding path program 1 times [2018-11-09 23:33:33,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:33,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 29925, now seen corresponding path program 2 times [2018-11-09 23:33:33,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:33,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:33,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:33,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:33,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:33,981 INFO L82 PathProgramCache]: Analyzing trace with hash 250690010, now seen corresponding path program 1 times [2018-11-09 23:33:33,981 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:33,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:33,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:33:33,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:34,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 23:33:34,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-09 23:33:34,065 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:34,065 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:34,065 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:34,065 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:34,065 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:33:34,065 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,065 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:34,065 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:34,066 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-09 23:33:34,066 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:34,066 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:34,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,101 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:34,101 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,104 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,104 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,106 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,107 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,131 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,132 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,134 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,134 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,150 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,150 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,152 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,152 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,168 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,168 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,170 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,170 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,186 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,186 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,188 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,188 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,203 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,204 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,206 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,206 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,221 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,221 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,239 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:33:34,239 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,259 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:33:34,260 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:34,260 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:34,260 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:34,260 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:34,261 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:33:34,261 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,261 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:34,261 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:34,261 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-09 23:33:34,261 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:34,261 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:34,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,305 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:34,305 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:33:34,305 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 [2018-11-09 23:33:34,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,306 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,306 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,306 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,306 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,307 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,307 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,309 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,309 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:33:34,310 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,310 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,310 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,310 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,310 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,311 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,311 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,312 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,312 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 [2018-11-09 23:33:34,312 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,313 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,313 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,313 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,313 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,313 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,313 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,314 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,314 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:33:34,315 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,315 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,315 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,315 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,315 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,315 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,315 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,316 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,316 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 [2018-11-09 23:33:34,317 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,317 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,317 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,317 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,317 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,318 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,318 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,319 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,319 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:33:34,320 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,320 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,320 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,320 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,320 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,321 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,321 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,324 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:33:34,326 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-09 23:33:34,326 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:33:34,327 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:33:34,327 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:33:34,327 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:33:34,327 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-11-09 23:33:34,328 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:33:34,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:34,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:34,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:34,386 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 [2018-11-09 23:33:34,386 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-09 23:33:34,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 73 states and 92 transitions. Complement of second has 15 states. [2018-11-09 23:33:34,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-09 23:33:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 23:33:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-11-09 23:33:34,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-09 23:33:34,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:34,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-09 23:33:34,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:34,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-09 23:33:34,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:34,455 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 92 transitions. [2018-11-09 23:33:34,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-09 23:33:34,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 51 states and 66 transitions. [2018-11-09 23:33:34,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-09 23:33:34,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2018-11-09 23:33:34,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 66 transitions. [2018-11-09 23:33:34,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:33:34,460 INFO L705 BuchiCegarLoop]: Abstraction has 51 states and 66 transitions. [2018-11-09 23:33:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 66 transitions. [2018-11-09 23:33:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2018-11-09 23:33:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-09 23:33:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2018-11-09 23:33:34,464 INFO L728 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2018-11-09 23:33:34,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-09 23:33:34,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-09 23:33:34,464 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2018-11-09 23:33:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 23:33:34,491 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-09 23:33:34,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-09 23:33:34,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2018-11-09 23:33:34,493 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-09 23:33:34,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 48 transitions. [2018-11-09 23:33:34,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-09 23:33:34,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-09 23:33:34,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 48 transitions. [2018-11-09 23:33:34,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:33:34,495 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-11-09 23:33:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 48 transitions. [2018-11-09 23:33:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-09 23:33:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-09 23:33:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-11-09 23:33:34,498 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-11-09 23:33:34,498 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-11-09 23:33:34,499 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-09 23:33:34,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 48 transitions. [2018-11-09 23:33:34,499 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-09 23:33:34,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:33:34,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:33:34,500 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 23:33:34,500 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:33:34,500 INFO L793 eck$LassoCheckResult]: Stem: 476#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 474#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 472#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 473#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 475#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 482#multENTRY ~n := #in~n;~m := #in~m; 494#L16 assume !(~m < 0); 491#L19 assume ~m == 0;#res := 0; 490#multFINAL assume true; 483#multEXIT >#46#return; 481#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 465#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 466#multENTRY [2018-11-09 23:33:34,501 INFO L795 eck$LassoCheckResult]: Loop: 466#multENTRY ~n := #in~n;~m := #in~m; 486#L16 assume ~m < 0; 464#L17 call #t~ret0 := mult(~n, -~m);< 466#multENTRY [2018-11-09 23:33:34,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash 248917746, now seen corresponding path program 1 times [2018-11-09 23:33:34,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:34,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:34,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:34,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash 29925, now seen corresponding path program 3 times [2018-11-09 23:33:34,509 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:34,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1899948972, now seen corresponding path program 1 times [2018-11-09 23:33:34,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:34,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:34,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:33:34,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:34,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 23:33:34,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-09 23:33:34,555 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:34,555 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:34,555 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:34,556 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:34,556 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:33:34,556 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,556 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:34,556 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:34,556 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-09 23:33:34,556 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:34,556 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:34,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,591 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:34,591 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,596 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,596 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,597 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,598 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,614 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,615 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,616 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,617 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,632 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,632 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,634 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,634 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,649 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,651 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,651 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,675 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,696 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:33:34,696 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,717 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:33:34,718 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:34,718 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:34,718 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:34,718 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:34,719 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:33:34,719 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,719 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:34,719 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:34,719 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-09 23:33:34,719 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:34,719 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:34,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,745 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:34,745 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:33:34,745 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 [2018-11-09 23:33:34,746 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,746 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,746 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,746 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,747 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,747 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 [2018-11-09 23:33:34,748 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,748 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,748 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,748 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,748 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,748 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,748 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,749 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,749 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 [2018-11-09 23:33:34,749 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,749 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,749 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,749 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,749 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,749 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,750 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,750 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,750 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 [2018-11-09 23:33:34,750 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,750 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,751 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,751 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,752 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:34,752 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 [2018-11-09 23:33:34,752 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:34,752 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:34,753 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:34,753 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:34,753 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:34,753 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:34,753 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:34,756 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:33:34,757 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-09 23:33:34,757 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:33:34,758 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:33:34,758 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:33:34,758 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:33:34,758 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-11-09 23:33:34,758 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:33:34,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:34,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:34,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:34,824 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 [2018-11-09 23:33:34,824 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9 Second operand 5 states. [2018-11-09 23:33:34,864 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 82 states and 91 transitions. Complement of second has 14 states. [2018-11-09 23:33:34,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-09 23:33:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-09 23:33:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-09 23:33:34,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-09 23:33:34,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:34,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-09 23:33:34,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:34,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-09 23:33:34,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:34,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 91 transitions. [2018-11-09 23:33:34,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-09 23:33:34,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 63 states and 71 transitions. [2018-11-09 23:33:34,869 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2018-11-09 23:33:34,869 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-09 23:33:34,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 71 transitions. [2018-11-09 23:33:34,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:33:34,869 INFO L705 BuchiCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-11-09 23:33:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 71 transitions. [2018-11-09 23:33:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2018-11-09 23:33:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-09 23:33:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-09 23:33:34,872 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-09 23:33:34,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-09 23:33:34,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-09 23:33:34,872 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-09 23:33:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 23:33:34,886 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-11-09 23:33:34,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-09 23:33:34,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2018-11-09 23:33:34,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-09 23:33:34,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 36 states and 40 transitions. [2018-11-09 23:33:34,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2018-11-09 23:33:34,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-11-09 23:33:34,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2018-11-09 23:33:34,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:33:34,889 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-09 23:33:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2018-11-09 23:33:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-09 23:33:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-09 23:33:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-09 23:33:34,893 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-09 23:33:34,894 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-09 23:33:34,894 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-09 23:33:34,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 36 transitions. [2018-11-09 23:33:34,895 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-09 23:33:34,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:33:34,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:33:34,896 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 23:33:34,896 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-09 23:33:34,896 INFO L793 eck$LassoCheckResult]: Stem: 758#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 756#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 754#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 755#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 757#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 764#multENTRY ~n := #in~n;~m := #in~m; 773#L16 assume !(~m < 0); 770#L19 assume ~m == 0;#res := 0; 769#multFINAL assume true; 768#multEXIT >#46#return; 763#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 752#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 749#multENTRY [2018-11-09 23:33:34,896 INFO L795 eck$LassoCheckResult]: Loop: 749#multENTRY ~n := #in~n;~m := #in~m; 751#L16 assume !(~m < 0); 753#L19 assume !(~m == 0); 750#L22 call #t~ret1 := mult(~n, ~m - 1);< 749#multENTRY [2018-11-09 23:33:34,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash 248917746, now seen corresponding path program 2 times [2018-11-09 23:33:34,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:34,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:34,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash 929640, now seen corresponding path program 1 times [2018-11-09 23:33:34,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:34,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:34,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:33:34,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:34,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1231125977, now seen corresponding path program 1 times [2018-11-09 23:33:34,913 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:34,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:34,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:34,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:34,955 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:34,955 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:34,956 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:34,956 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:34,956 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:33:34,956 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:34,956 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:34,956 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:34,956 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-09 23:33:34,956 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:34,956 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:34,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:34,990 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:34,991 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/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 [2018-11-09 23:33:34,993 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:34,993 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:34,995 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:34,995 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,011 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,011 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,013 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,013 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,029 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,029 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,031 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,031 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,048 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,048 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,066 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:33:35,066 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,083 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:33:35,084 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:35,084 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:35,085 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:35,085 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:35,085 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:33:35,085 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,085 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:35,085 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:35,085 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-09 23:33:35,085 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:35,085 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:35,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,125 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:35,126 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:33:35,126 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 [2018-11-09 23:33:35,126 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,126 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,126 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,127 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,127 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,127 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,127 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,128 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,128 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 [2018-11-09 23:33:35,128 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,128 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,128 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,128 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,128 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,129 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,129 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,129 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,129 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 [2018-11-09 23:33:35,130 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,130 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,130 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,130 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,130 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,130 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,130 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,132 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:33:35,134 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:33:35,134 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-09 23:33:35,134 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:33:35,134 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:33:35,135 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:33:35,135 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2018-11-09 23:33:35,135 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:33:35,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:35,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:35,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:35,194 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 [2018-11-09 23:33:35,194 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6 Second operand 5 states. [2018-11-09 23:33:35,235 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 42 states and 46 transitions. Complement of second has 13 states. [2018-11-09 23:33:35,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-09 23:33:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-09 23:33:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2018-11-09 23:33:35,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-09 23:33:35,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:35,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-09 23:33:35,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:35,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 12 letters. Loop has 8 letters. [2018-11-09 23:33:35,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:35,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 46 transitions. [2018-11-09 23:33:35,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-09 23:33:35,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 16 states and 16 transitions. [2018-11-09 23:33:35,238 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-09 23:33:35,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-09 23:33:35,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 16 transitions. [2018-11-09 23:33:35,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:33:35,238 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-09 23:33:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 16 transitions. [2018-11-09 23:33:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 9. [2018-11-09 23:33:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 23:33:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-11-09 23:33:35,239 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-11-09 23:33:35,239 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-11-09 23:33:35,239 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-09 23:33:35,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 9 transitions. [2018-11-09 23:33:35,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-09 23:33:35,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:33:35,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:33:35,240 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-09 23:33:35,240 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-09 23:33:35,240 INFO L793 eck$LassoCheckResult]: Stem: 914#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 907#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 908#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 909#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 910#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 912#multENTRY [2018-11-09 23:33:35,240 INFO L795 eck$LassoCheckResult]: Loop: 912#multENTRY ~n := #in~n;~m := #in~m; 913#L16 assume !(~m < 0); 915#L19 assume !(~m == 0); 911#L22 call #t~ret1 := mult(~n, ~m - 1);< 912#multENTRY [2018-11-09 23:33:35,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash 42056133, now seen corresponding path program 2 times [2018-11-09 23:33:35,241 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:35,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:35,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:35,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:33:35,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:35,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash 929640, now seen corresponding path program 2 times [2018-11-09 23:33:35,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:35,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:35,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:35,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:33:35,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:35,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash 332752684, now seen corresponding path program 2 times [2018-11-09 23:33:35,252 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:33:35,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:33:35,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:35,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:33:35,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:33:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:33:35,286 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:35,286 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:35,286 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:35,286 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:35,286 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:33:35,286 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,286 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:35,286 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:35,286 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-09 23:33:35,287 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:35,287 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:35,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,330 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:35,330 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,332 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,333 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,335 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,335 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,356 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,356 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,358 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,358 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,378 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,381 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,381 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,401 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,401 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,403 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,404 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,425 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,425 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,427 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:33:35,427 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,448 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:33:35,448 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ea1519-8f30-4375-8baf-a961f3977aeb/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:33:35,470 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:33:35,491 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:33:35,493 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:33:35,493 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:33:35,493 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:33:35,493 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:33:35,493 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:33:35,493 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:33:35,493 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:33:35,493 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:33:35,494 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-09 23:33:35,494 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:33:35,494 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:33:35,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:33:35,547 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:33:35,547 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:33:35,547 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 [2018-11-09 23:33:35,548 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,548 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,548 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,548 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,548 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,549 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,549 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,550 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,550 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 [2018-11-09 23:33:35,550 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,550 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,550 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,551 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,551 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,551 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,551 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,552 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,552 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 [2018-11-09 23:33:35,552 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,552 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,553 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,553 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,553 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,553 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,553 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,554 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,554 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 [2018-11-09 23:33:35,555 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,555 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,555 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,555 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,555 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,555 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,555 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,556 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,556 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 [2018-11-09 23:33:35,557 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,557 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,557 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,557 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,557 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,557 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,558 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,558 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:33:35,558 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 [2018-11-09 23:33:35,559 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:33:35,559 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:33:35,559 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:33:35,559 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:33:35,559 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:33:35,560 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:33:35,560 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:33:35,562 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:33:35,563 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:33:35,563 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-09 23:33:35,564 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:33:35,564 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:33:35,564 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:33:35,564 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2018-11-09 23:33:35,564 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:33:35,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:33:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:35,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:33:35,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:33:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:33:35,606 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 [2018-11-09 23:33:35,606 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1 Second operand 4 states. [2018-11-09 23:33:35,631 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1. Second operand 4 states. Result 19 states and 19 transitions. Complement of second has 11 states. [2018-11-09 23:33:35,632 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 [2018-11-09 23:33:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 23:33:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-09 23:33:35,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-09 23:33:35,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:35,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-09 23:33:35,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:35,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-09 23:33:35,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:33:35,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 19 transitions. [2018-11-09 23:33:35,634 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 23:33:35,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2018-11-09 23:33:35,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-09 23:33:35,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-09 23:33:35,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-09 23:33:35,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:33:35,634 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:33:35,634 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:33:35,634 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:33:35,635 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-09 23:33:35,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-09 23:33:35,635 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 23:33:35,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-09 23:33:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 11:33:35 BoogieIcfgContainer [2018-11-09 23:33:35,641 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-09 23:33:35,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 23:33:35,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 23:33:35,642 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 23:33:35,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:33:32" (3/4) ... [2018-11-09 23:33:35,645 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-09 23:33:35,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 23:33:35,646 INFO L168 Benchmark]: Toolchain (without parser) took 3014.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 963.0 MB in the beginning and 907.3 MB in the end (delta: 55.7 MB). Peak memory consumption was 189.4 MB. Max. memory is 11.5 GB. [2018-11-09 23:33:35,647 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:33:35,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.77 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 951.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-09 23:33:35,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.06 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:33:35,648 INFO L168 Benchmark]: Boogie Preprocessor took 9.09 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-09 23:33:35,649 INFO L168 Benchmark]: RCFGBuilder took 177.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-09 23:33:35,649 INFO L168 Benchmark]: BuchiAutomizer took 2643.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.3 MB in the end (delta: 214.0 MB). Peak memory consumption was 214.0 MB. Max. memory is 11.5 GB. [2018-11-09 23:33:35,650 INFO L168 Benchmark]: Witness Printer took 3.73 ms. Allocated memory is still 1.2 GB. Free memory is still 907.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:33:35,652 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.77 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 951.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.06 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.09 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 177.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2643.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.3 MB in the end (delta: 214.0 MB). Peak memory consumption was 214.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.73 ms. Allocated memory is still 1.2 GB. Free memory is still 907.3 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, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 42 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 128 SDtfs, 142 SDslu, 126 SDs, 0 SdLazy, 162 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf94 smp87 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...