./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 0.1.24-cad4683 [2019-10-22 09:01:01,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:01,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:01,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:01,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:01,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:01,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:01,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:01,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:01,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:01,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:01,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:01,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:01,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:01,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:01,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:01,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:01,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:01,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:01,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:01,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:01,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:01,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:01,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:01,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:01,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:01,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:01,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:01,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:01,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:01,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:01,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:01,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:01,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:01,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:01,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:01,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:01,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:01,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:01,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:01,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:01,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 09:01:01,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:01,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:01,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:01,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:01,766 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:01,766 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:01:01,766 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:01:01,766 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:01:01,766 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:01:01,767 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:01:01,767 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:01:01,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:01,767 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:01,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:01,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:01,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:01,768 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:01:01,769 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:01,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:01:01,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:01,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:01,769 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:01:01,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:01,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:01,771 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:01:01,772 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:01:01,774 INFO L138 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:01,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:01,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:01,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:01,814 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:01,815 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:01,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2019-10-22 09:01:01,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/data/33727b5d8/101da206bc8b4291b4e0f69ea7564ecf/FLAGbabcd522e [2019-10-22 09:01:02,200 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:02,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/sv-benchmarks/c/recursive/MultCommutative-2.c [2019-10-22 09:01:02,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/data/33727b5d8/101da206bc8b4291b4e0f69ea7564ecf/FLAGbabcd522e [2019-10-22 09:01:02,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/data/33727b5d8/101da206bc8b4291b4e0f69ea7564ecf [2019-10-22 09:01:02,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:02,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:02,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:02,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:02,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:02,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38eeddbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02, skipping insertion in model container [2019-10-22 09:01:02,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,232 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:02,246 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:02,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:02,379 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:02,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:02,505 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:02,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02 WrapperNode [2019-10-22 09:01:02,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:02,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:02,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:02,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:02,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:02,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:02,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:02,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:02,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:02,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:02,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:02,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:02,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-10-22 09:01:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-10-22 09:01:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:02,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:02,763 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:02,763 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:01:02,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:02 BoogieIcfgContainer [2019-10-22 09:01:02,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:02,765 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:01:02,765 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:01:02,769 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:01:02,769 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:01:02,769 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:01:02" (1/3) ... [2019-10-22 09:01:02,771 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74b10744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:01:02, skipping insertion in model container [2019-10-22 09:01:02,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:01:02,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (2/3) ... [2019-10-22 09:01:02,771 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74b10744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:01:02, skipping insertion in model container [2019-10-22 09:01:02,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:01:02,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:02" (3/3) ... [2019-10-22 09:01:02,773 INFO L371 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2019-10-22 09:01:02,862 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:01:02,862 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:01:02,862 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:01:02,862 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:02,862 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:02,862 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:01:02,862 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:02,862 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:01:02,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-10-22 09:01:02,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:01:02,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:01:02,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:01:02,913 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:01:02,913 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:01:02,913 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:01:02,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-10-22 09:01:02,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:01:02,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:01:02,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:01:02,916 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:01:02,916 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:01:02,923 INFO L791 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L31true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 16#L34true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2019-10-22 09:01:02,924 INFO L793 eck$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 [2019-10-22 09:01:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:02,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 1 times [2019-10-22 09:01:02,938 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:02,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47305573] [2019-10-22 09:01:02,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:02,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:02,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,066 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:03,067 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 1 times [2019-10-22 09:01:03,068 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:03,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074753270] [2019-10-22 09:01:03,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,079 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:03,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1527521652, now seen corresponding path program 1 times [2019-10-22 09:01:03,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:03,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285760394] [2019-10-22 09:01:03,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:03,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285760394] [2019-10-22 09:01:03,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:03,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:03,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891060903] [2019-10-22 09:01:03,241 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:03,241 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:03,241 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:03,241 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:03,242 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:01:03,242 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:03,242 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:03,242 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:03,242 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-10-22 09:01:03,243 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:03,243 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:03,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:03,334 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:03,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:03,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:03,351 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:03,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:03,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:03,360 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:03,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:03,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:03,369 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:03,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:03,378 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:03,378 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:03,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:03,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:03,390 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:03,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:03,407 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:03,407 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:03,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:03,424 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:03,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:01:03,438 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:03,498 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:01:03,501 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:03,501 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:03,501 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:03,502 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:03,502 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:01:03,502 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:03,502 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:03,502 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:03,502 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-10-22 09:01:03,502 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:03,502 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:03,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:03,579 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:03,585 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:01:03,586 INFO L120 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 [2019-10-22 09:01:03,588 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,589 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,590 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,590 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,590 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,592 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,593 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,594 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:03,595 INFO L120 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 [2019-10-22 09:01:03,595 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,595 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,595 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,596 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,596 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,596 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,596 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,597 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:03,597 INFO L120 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 [2019-10-22 09:01:03,599 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,599 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,600 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,600 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,600 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,600 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,601 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:03,602 INFO L120 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 [2019-10-22 09:01:03,603 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,603 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,603 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,603 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,603 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,604 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,604 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:03,605 INFO L120 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 [2019-10-22 09:01:03,608 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,608 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,608 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,608 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,609 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,609 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,609 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:03,611 INFO L120 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 [2019-10-22 09:01:03,611 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,611 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,612 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,612 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,612 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,612 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,612 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,618 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:03,619 INFO L120 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 [2019-10-22 09:01:03,619 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:03,619 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:03,619 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:03,620 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:03,620 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:03,620 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:03,620 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:03,630 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:01:03,633 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 09:01:03,633 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:01:03,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:01:03,639 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:01:03,639 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:01:03,640 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-10-22 09:01:03,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:01:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:03,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:01:03,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:03,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:03,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:03,736 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 [2019-10-22 09:01:03,737 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 4 states. [2019-10-22 09:01:03,836 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 4 states. Result 50 states and 65 transitions. Complement of second has 12 states. [2019-10-22 09:01:03,836 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 [2019-10-22 09:01:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:01:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-10-22 09:01:03,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 09:01:03,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:03,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2019-10-22 09:01:03,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:03,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2019-10-22 09:01:03,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:03,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2019-10-22 09:01:03,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:01:03,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 31 states and 44 transitions. [2019-10-22 09:01:03,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-10-22 09:01:03,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-10-22 09:01:03,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 44 transitions. [2019-10-22 09:01:03,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:01:03,858 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-10-22 09:01:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 44 transitions. [2019-10-22 09:01:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-10-22 09:01:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 09:01:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2019-10-22 09:01:03,888 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-10-22 09:01:03,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:03,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:03,891 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2019-10-22 09:01:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:03,936 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-10-22 09:01:03,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:03,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-10-22 09:01:03,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:01:03,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 33 transitions. [2019-10-22 09:01:03,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-10-22 09:01:03,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-10-22 09:01:03,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2019-10-22 09:01:03,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:01:03,941 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-10-22 09:01:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2019-10-22 09:01:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2019-10-22 09:01:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 09:01:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-10-22 09:01:03,944 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-10-22 09:01:03,944 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-10-22 09:01:03,945 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:01:03,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2019-10-22 09:01:03,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:01:03,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:01:03,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:01:03,946 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:03,946 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:01:03,946 INFO L791 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 197#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 198#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 192#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 191#multENTRY ~n := #in~n;~m := #in~m; 193#L16 assume !(~m < 0); 194#L19 assume !(0 == ~m); 187#L22 call #t~ret1 := mult(~n, ~m - 1);< 190#multENTRY [2019-10-22 09:01:03,946 INFO L793 eck$LassoCheckResult]: Loop: 190#multENTRY ~n := #in~n;~m := #in~m; 205#L16 assume ~m < 0; 186#L17 call #t~ret0 := mult(~n, -~m);< 190#multENTRY [2019-10-22 09:01:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:03,947 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 1 times [2019-10-22 09:01:03,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:03,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393573585] [2019-10-22 09:01:03,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,960 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 2 times [2019-10-22 09:01:03,961 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:03,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464735870] [2019-10-22 09:01:03,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:03,973 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:03,974 INFO L82 PathProgramCache]: Analyzing trace with hash 924096870, now seen corresponding path program 1 times [2019-10-22 09:01:03,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:03,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831182145] [2019-10-22 09:01:03,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:03,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:04,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831182145] [2019-10-22 09:01:04,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:04,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:04,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087146790] [2019-10-22 09:01:04,060 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:04,060 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:04,061 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:04,061 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:04,061 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:01:04,061 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,061 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:04,061 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:04,061 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-10-22 09:01:04,062 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:04,062 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:04,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,131 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:04,131 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,139 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,144 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,151 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,155 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,164 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,167 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,167 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,184 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,188 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,199 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,203 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,211 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,215 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:04,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,223 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:01:04,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:04,301 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:01:04,306 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:04,306 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:04,306 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:04,306 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:04,306 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:01:04,306 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,306 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:04,307 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:04,307 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-10-22 09:01:04,307 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:04,307 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:04,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,367 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:04,368 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:01:04,368 INFO L120 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 [2019-10-22 09:01:04,369 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,369 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,369 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,369 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,369 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,370 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,370 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,372 INFO L120 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 [2019-10-22 09:01:04,374 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,375 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,375 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,375 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,375 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,376 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,376 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,377 INFO L120 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 [2019-10-22 09:01:04,380 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,380 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,380 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,380 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,380 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,381 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,381 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,382 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,382 INFO L120 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 [2019-10-22 09:01:04,383 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,383 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,383 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,383 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,383 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,384 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,384 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,385 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,385 INFO L120 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 [2019-10-22 09:01:04,389 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,389 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,389 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,389 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,389 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,390 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,390 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,391 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,392 INFO L120 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 [2019-10-22 09:01:04,392 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,392 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,393 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,393 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,393 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,393 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,396 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,400 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:01:04,404 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 09:01:04,405 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:01:04,405 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:01:04,405 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:01:04,406 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:01:04,406 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-10-22 09:01:04,406 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:01:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:04,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:01:04,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:04,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:04,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:04,490 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 [2019-10-22 09:01:04,491 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-10-22 09:01:04,597 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 72 states and 91 transitions. Complement of second has 15 states. [2019-10-22 09:01:04,598 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 [2019-10-22 09:01:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:01:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2019-10-22 09:01:04,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 09:01:04,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:04,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 11 letters. Loop has 3 letters. [2019-10-22 09:01:04,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:04,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 6 letters. [2019-10-22 09:01:04,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:04,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 91 transitions. [2019-10-22 09:01:04,606 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-10-22 09:01:04,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 65 transitions. [2019-10-22 09:01:04,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2019-10-22 09:01:04,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-10-22 09:01:04,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 65 transitions. [2019-10-22 09:01:04,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:01:04,613 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 65 transitions. [2019-10-22 09:01:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 65 transitions. [2019-10-22 09:01:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-10-22 09:01:04,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 09:01:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-10-22 09:01:04,618 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-10-22 09:01:04,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:04,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:04,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:04,618 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2019-10-22 09:01:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:04,664 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-10-22 09:01:04,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:04,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 59 transitions. [2019-10-22 09:01:04,666 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-10-22 09:01:04,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 47 transitions. [2019-10-22 09:01:04,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-10-22 09:01:04,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-10-22 09:01:04,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 47 transitions. [2019-10-22 09:01:04,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:01:04,671 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-10-22 09:01:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 47 transitions. [2019-10-22 09:01:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-22 09:01:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 09:01:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-10-22 09:01:04,676 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-10-22 09:01:04,676 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-10-22 09:01:04,676 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:01:04,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 47 transitions. [2019-10-22 09:01:04,677 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-10-22 09:01:04,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:01:04,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:01:04,678 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:04,678 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:01:04,678 INFO L791 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 458#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 459#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 460#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 467#multENTRY ~n := #in~n;~m := #in~m; 479#L16 assume !(~m < 0); 476#L19 assume 0 == ~m;#res := 0; 475#multFINAL assume true; 469#multEXIT >#45#return; 466#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 451#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 452#multENTRY [2019-10-22 09:01:04,678 INFO L793 eck$LassoCheckResult]: Loop: 452#multENTRY ~n := #in~n;~m := #in~m; 474#L16 assume ~m < 0; 450#L17 call #t~ret0 := mult(~n, -~m);< 452#multENTRY [2019-10-22 09:01:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:04,678 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 1 times [2019-10-22 09:01:04,678 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:04,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448793024] [2019-10-22 09:01:04,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:04,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:04,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:04,690 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:04,690 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 3 times [2019-10-22 09:01:04,690 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:04,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920294058] [2019-10-22 09:01:04,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:04,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:04,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:04,696 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:04,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1370471320, now seen corresponding path program 1 times [2019-10-22 09:01:04,697 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:04,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413843159] [2019-10-22 09:01:04,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:04,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:04,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:04,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413843159] [2019-10-22 09:01:04,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:04,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:04,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446577378] [2019-10-22 09:01:04,788 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:04,788 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:04,788 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:04,788 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:04,789 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:01:04,789 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,789 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:04,789 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:04,789 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-10-22 09:01:04,789 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:04,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:04,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,852 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:04,852 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:04,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,858 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:04,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,865 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:04,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,872 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:04,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:04,879 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:04,885 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:04,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:01:04,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:04,902 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:01:04,903 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:04,903 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:04,903 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:04,904 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:04,904 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:01:04,904 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:04,904 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:04,904 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:04,904 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-10-22 09:01:04,904 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:04,904 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:04,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:04,969 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:04,969 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:01:04,969 INFO L120 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 [2019-10-22 09:01:04,970 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,970 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,970 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,970 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,970 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,971 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,971 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,972 INFO L120 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 [2019-10-22 09:01:04,973 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,973 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,973 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,973 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,973 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,973 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,974 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,975 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,975 INFO L120 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 [2019-10-22 09:01:04,975 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,976 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,976 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,976 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,976 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,976 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,976 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,977 INFO L120 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 [2019-10-22 09:01:04,978 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,978 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,978 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,979 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,979 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,979 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,979 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:04,980 INFO L120 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 [2019-10-22 09:01:04,981 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:04,981 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:04,981 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:04,981 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:04,981 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:04,982 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:04,982 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:04,985 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:01:04,987 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 09:01:04,987 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:01:04,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:01:04,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:01:04,988 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:01:04,988 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-10-22 09:01:04,989 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:01:05,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:05,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:01:05,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:05,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:05,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:05,081 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 [2019-10-22 09:01:05,081 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-10-22 09:01:05,156 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 81 states and 90 transitions. Complement of second has 14 states. [2019-10-22 09:01:05,156 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 [2019-10-22 09:01:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:01:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-10-22 09:01:05,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 3 letters. [2019-10-22 09:01:05,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:05,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2019-10-22 09:01:05,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:05,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 6 letters. [2019-10-22 09:01:05,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:05,158 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 90 transitions. [2019-10-22 09:01:05,160 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-10-22 09:01:05,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 62 states and 70 transitions. [2019-10-22 09:01:05,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-10-22 09:01:05,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2019-10-22 09:01:05,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 70 transitions. [2019-10-22 09:01:05,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:01:05,162 INFO L688 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-10-22 09:01:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 70 transitions. [2019-10-22 09:01:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2019-10-22 09:01:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 09:01:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-10-22 09:01:05,166 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-10-22 09:01:05,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:05,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:05,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:05,167 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2019-10-22 09:01:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:05,193 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-10-22 09:01:05,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:05,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2019-10-22 09:01:05,194 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-10-22 09:01:05,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 39 transitions. [2019-10-22 09:01:05,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-10-22 09:01:05,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-10-22 09:01:05,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 39 transitions. [2019-10-22 09:01:05,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:01:05,196 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-22 09:01:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 39 transitions. [2019-10-22 09:01:05,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-10-22 09:01:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 09:01:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-22 09:01:05,199 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-22 09:01:05,199 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-22 09:01:05,199 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:01:05,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2019-10-22 09:01:05,200 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-10-22 09:01:05,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:01:05,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:01:05,200 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:05,200 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 09:01:05,201 INFO L791 eck$LassoCheckResult]: Stem: 741#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 738#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 739#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 740#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 747#multENTRY ~n := #in~n;~m := #in~m; 754#L16 assume !(~m < 0); 752#L19 assume 0 == ~m;#res := 0; 751#multFINAL assume true; 750#multEXIT >#45#return; 746#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 736#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 733#multENTRY [2019-10-22 09:01:05,201 INFO L793 eck$LassoCheckResult]: Loop: 733#multENTRY ~n := #in~n;~m := #in~m; 735#L16 assume !(~m < 0); 737#L19 assume !(0 == ~m); 734#L22 call #t~ret1 := mult(~n, ~m - 1);< 733#multENTRY [2019-10-22 09:01:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 2 times [2019-10-22 09:01:05,201 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:05,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547306590] [2019-10-22 09:01:05,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,213 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 1 times [2019-10-22 09:01:05,213 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:05,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296239448] [2019-10-22 09:01:05,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,220 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash 465064035, now seen corresponding path program 1 times [2019-10-22 09:01:05,220 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:05,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021290743] [2019-10-22 09:01:05,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,233 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:05,275 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:05,275 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:05,275 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:05,275 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:05,275 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:01:05,275 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:05,275 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:05,275 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:05,276 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-10-22 09:01:05,276 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:05,276 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:05,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,341 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:05,341 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:01:05,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,347 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:05,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,351 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,360 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,374 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,382 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:01:05,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,423 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:01:05,425 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:05,425 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:05,425 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:05,425 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:05,425 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:01:05,425 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:05,425 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:05,425 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:05,425 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-10-22 09:01:05,425 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:05,425 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:05,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,484 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:05,484 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:01:05,485 INFO L120 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 [2019-10-22 09:01:05,485 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,485 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,485 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,486 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,486 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,486 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,486 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,487 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,487 INFO L120 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 [2019-10-22 09:01:05,488 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,488 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,488 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,488 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,488 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,488 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,488 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,489 INFO L120 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 [2019-10-22 09:01:05,489 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,489 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,490 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,490 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,490 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,491 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,491 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,494 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:01:05,496 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:01:05,496 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:01:05,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:01:05,496 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:01:05,496 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:01:05,496 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-10-22 09:01:05,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:01:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:05,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:01:05,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:05,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:05,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:05,567 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 [2019-10-22 09:01:05,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6 Second operand 5 states. [2019-10-22 09:01:05,623 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 41 states and 45 transitions. Complement of second has 13 states. [2019-10-22 09:01:05,624 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 [2019-10-22 09:01:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:01:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-10-22 09:01:05,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-10-22 09:01:05,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:05,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-10-22 09:01:05,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:05,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-10-22 09:01:05,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:05,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2019-10-22 09:01:05,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:01:05,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 15 states and 15 transitions. [2019-10-22 09:01:05,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-10-22 09:01:05,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-10-22 09:01:05,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 15 transitions. [2019-10-22 09:01:05,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:01:05,627 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-22 09:01:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 15 transitions. [2019-10-22 09:01:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2019-10-22 09:01:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 09:01:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 09:01:05,628 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 09:01:05,628 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 09:01:05,628 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:01:05,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 8 transitions. [2019-10-22 09:01:05,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:01:05,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:01:05,628 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:01:05,629 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:01:05,629 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 09:01:05,629 INFO L791 eck$LassoCheckResult]: Stem: 892#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 893#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 886#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 887#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 889#multENTRY [2019-10-22 09:01:05,629 INFO L793 eck$LassoCheckResult]: Loop: 889#multENTRY ~n := #in~n;~m := #in~m; 890#L16 assume !(~m < 0); 891#L19 assume !(0 == ~m); 888#L22 call #t~ret1 := mult(~n, ~m - 1);< 889#multENTRY [2019-10-22 09:01:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 2 times [2019-10-22 09:01:05,629 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:05,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838771234] [2019-10-22 09:01:05,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,637 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,638 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 2 times [2019-10-22 09:01:05,638 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:05,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295678240] [2019-10-22 09:01:05,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,644 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:05,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,644 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 2 times [2019-10-22 09:01:05,644 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:05,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492724353] [2019-10-22 09:01:05,644 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:05,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:05,653 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:05,710 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:05,710 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:05,710 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:05,710 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:05,710 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:01:05,711 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:05,711 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:05,711 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:05,711 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-10-22 09:01:05,711 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:05,711 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:05,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:05,764 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,771 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,777 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,778 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,784 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,790 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:01:05,800 INFO L440 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_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:01:05,805 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78d5bb-ed4f-4cd1-b03d-dc81cd092a57/bin/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 [2019-10-22 09:01:05,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:01:05,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:01:05,845 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:01:05,846 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:01:05,846 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:01:05,847 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:01:05,847 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:01:05,847 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:01:05,847 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:01:05,847 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:01:05,847 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:01:05,847 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-10-22 09:01:05,847 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:01:05,847 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:01:05,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:01:05,916 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:01:05,916 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:01:05,916 INFO L120 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 [2019-10-22 09:01:05,917 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,917 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,917 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,917 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,918 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,918 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,918 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,919 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,919 INFO L120 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 [2019-10-22 09:01:05,920 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,920 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,920 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,921 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,921 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,921 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,921 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,922 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,922 INFO L120 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 [2019-10-22 09:01:05,923 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,923 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,923 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,923 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,923 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,924 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,924 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,925 INFO L120 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 [2019-10-22 09:01:05,927 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,928 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,928 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,928 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,928 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,929 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,929 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,937 INFO L120 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 [2019-10-22 09:01:05,938 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,938 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,938 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,938 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,938 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,939 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,939 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:01:05,940 INFO L120 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 [2019-10-22 09:01:05,941 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:01:05,941 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:01:05,941 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:01:05,941 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:01:05,941 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:01:05,942 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:01:05,942 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:01:05,950 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:01:05,952 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:01:05,952 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:01:05,952 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:01:05,952 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:01:05,953 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:01:05,953 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-10-22 09:01:05,953 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:01:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:05,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:01:05,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:06,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:06,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:06,033 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 [2019-10-22 09:01:06,034 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-10-22 09:01:06,072 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1. Second operand 4 states. Result 18 states and 18 transitions. Complement of second has 11 states. [2019-10-22 09:01:06,073 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 [2019-10-22 09:01:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:01:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 09:01:06,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-10-22 09:01:06,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:06,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-10-22 09:01:06,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:06,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2019-10-22 09:01:06,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:01:06,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2019-10-22 09:01:06,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:01:06,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-10-22 09:01:06,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:01:06,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:01:06,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:01:06,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:01:06,076 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:06,076 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:06,076 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:06,076 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 09:01:06,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:06,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:01:06,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:01:06,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:01:06 BoogieIcfgContainer [2019-10-22 09:01:06,083 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:01:06,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:06,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:06,083 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:06,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:02" (3/4) ... [2019-10-22 09:01:06,087 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:01:06,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:06,089 INFO L168 Benchmark]: Toolchain (without parser) took 3869.49 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 237.5 MB). Free memory was 940.4 MB in the beginning and 997.9 MB in the end (delta: -57.5 MB). Peak memory consumption was 180.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,090 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:06,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -228.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,091 INFO L168 Benchmark]: Boogie Preprocessor took 17.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,092 INFO L168 Benchmark]: RCFGBuilder took 209.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,092 INFO L168 Benchmark]: BuchiAutomizer took 3317.59 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 68.2 MB). Free memory was 1.1 GB in the beginning and 997.9 MB in the end (delta: 145.2 MB). Peak memory consumption was 213.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,093 INFO L168 Benchmark]: Witness Printer took 4.41 ms. Allocated memory is still 1.3 GB. Free memory is still 997.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:06,095 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -228.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3317.59 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 68.2 MB). Free memory was 1.1 GB in the beginning and 997.9 MB in the end (delta: 145.2 MB). Peak memory consumption was 213.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.41 ms. Allocated memory is still 1.3 GB. Free memory is still 997.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 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 3.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. 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 41 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 120 SDtfs, 136 SDslu, 102 SDs, 0 SdLazy, 159 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...