./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 bbc43fe9834b77811d120f68e3a868f414cdd105 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:23:15,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:23:15,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:23:15,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:23:15,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:23:15,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:23:15,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:23:15,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:23:15,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:23:15,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:23:15,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:23:15,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:23:15,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:23:15,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:23:15,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:23:15,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:23:15,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:23:15,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:23:15,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:23:15,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:23:15,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:23:15,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:23:15,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:23:15,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:23:15,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:23:15,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:23:15,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:23:15,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:23:15,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:23:15,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:23:15,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:23:15,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:23:15,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:23:15,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:23:15,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:23:15,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:23:15,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:23:15,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:23:15,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:23:15,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:23:15,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:23:15,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:23:15,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:23:15,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:23:15,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:23:15,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:23:15,976 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:23:15,976 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:23:15,976 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:23:15,976 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:23:15,977 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:23:15,977 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:23:15,978 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:23:15,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:23:15,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:23:15,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:23:15,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:23:15,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:23:15,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:23:15,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:23:15,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:23:15,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:23:15,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:23:15,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:23:15,982 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:23:15,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:23:15,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:23:15,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:23:15,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:23:15,983 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:23:15,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:23:15,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:23:15,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:23:15,984 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:23:15,986 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:23:15,986 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbc43fe9834b77811d120f68e3a868f414cdd105 [2020-11-30 00:23:16,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:23:16,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:23:16,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:23:16,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:23:16,359 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:23:16,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2020-11-30 00:23:16,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/data/8975472b2/613ed533bb7149c5a45237ae5379a9ad/FLAGe54351abe [2020-11-30 00:23:16,993 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:23:16,994 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/sv-benchmarks/c/recursive/MultCommutative-2.c [2020-11-30 00:23:17,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/data/8975472b2/613ed533bb7149c5a45237ae5379a9ad/FLAGe54351abe [2020-11-30 00:23:17,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/data/8975472b2/613ed533bb7149c5a45237ae5379a9ad [2020-11-30 00:23:17,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:23:17,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:23:17,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:23:17,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:23:17,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:23:17,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255d3863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17, skipping insertion in model container [2020-11-30 00:23:17,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:23:17,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:23:17,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:23:17,631 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:23:17,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:23:17,704 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:23:17,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17 WrapperNode [2020-11-30 00:23:17,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:23:17,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:23:17,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:23:17,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:23:17,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:23:17,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:23:17,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:23:17,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:23:17,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... [2020-11-30 00:23:17,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:23:17,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:23:17,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:23:17,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:23:17,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-11-30 00:23:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-11-30 00:23:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:23:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:23:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:23:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:23:18,149 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:23:18,149 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:23:18,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:23:18 BoogieIcfgContainer [2020-11-30 00:23:18,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:23:18,153 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:23:18,153 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:23:18,157 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:23:18,158 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:23:18,158 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:23:17" (1/3) ... [2020-11-30 00:23:18,160 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@410f9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:23:18, skipping insertion in model container [2020-11-30 00:23:18,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:23:18,160 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:17" (2/3) ... [2020-11-30 00:23:18,161 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@410f9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:23:18, skipping insertion in model container [2020-11-30 00:23:18,161 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:23:18,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:23:18" (3/3) ... [2020-11-30 00:23:18,163 INFO L373 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2020-11-30 00:23:18,216 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:23:18,216 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:23:18,216 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:23:18,217 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:23:18,217 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:23:18,217 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:23:18,217 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:23:18,217 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:23:18,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-11-30 00:23:18,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 00:23:18,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:23:18,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:23:18,290 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:23:18,290 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:23:18,290 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:23:18,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-11-30 00:23:18,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 00:23:18,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:23:18,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:23:18,295 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:23:18,295 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:23:18,304 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 7#L29true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 14#L33true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 24#L36true call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 3#multENTRYtrue [2020-11-30 00:23:18,317 INFO L796 eck$LassoCheckResult]: Loop: 3#multENTRYtrue ~n := #in~n;~m := #in~m; 21#L18true assume ~m < 0; 16#L19true call #t~ret7 := mult(~n, -~m);< 3#multENTRYtrue [2020-11-30 00:23:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 1 times [2020-11-30 00:23:18,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818648436] [2020-11-30 00:23:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:18,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:18,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:18,689 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 1 times [2020-11-30 00:23:18,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575026113] [2020-11-30 00:23:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:18,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:18,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:18,737 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1236132511, now seen corresponding path program 1 times [2020-11-30 00:23:18,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104023792] [2020-11-30 00:23:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104023792] [2020-11-30 00:23:18,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:23:18,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597225167] [2020-11-30 00:23:19,080 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:19,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:19,082 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:19,082 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:19,082 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:23:19,082 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:19,083 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:19,083 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-11-30 00:23:19,083 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:19,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:19,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,253 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:19,256 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:19,270 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:19,284 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:19,334 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,338 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:19,338 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:19,377 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:19,381 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:19,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:19,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:19,416 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:19,416 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:19,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:19,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:19,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:19,455 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret8=0} Honda state: {mult_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:19,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:19,484 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:23:19,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:19,616 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:23:19,627 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:19,627 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:19,627 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:19,627 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:19,627 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:23:19,628 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,628 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:19,628 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:19,628 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-11-30 00:23:19,628 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:19,628 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:19,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:19,743 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:19,748 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,756 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 [2020-11-30 00:23:19,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:19,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:19,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:19,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:19,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:19,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:19,766 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,771 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,823 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 [2020-11-30 00:23:19,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:19,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:19,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:19,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:19,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:19,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:19,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:19,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,882 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 [2020-11-30 00:23:19,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:19,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:19,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:19,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:19,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:19,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:19,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,939 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 [2020-11-30 00:23:19,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:19,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:19,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:19,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:19,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:19,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:19,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:19,949 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:19,996 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 [2020-11-30 00:23:19,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:19,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:19,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:19,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:19,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:20,001 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:20,001 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:20,005 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:20,047 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 [2020-11-30 00:23:20,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:20,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:20,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:20,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:20,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:20,051 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:20,052 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:20,054 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:20,088 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 [2020-11-30 00:23:20,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:20,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:20,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:20,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:20,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:20,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:20,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:20,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:23:20,114 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:23:20,114 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:20,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:23:20,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:23:20,142 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:23:20,143 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2020-11-30 00:23:20,171 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:23:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:20,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:23:20,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:20,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:23:20,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:20,378 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 [2020-11-30 00:23:20,380 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states. Second operand 4 states. [2020-11-30 00:23:20,567 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states.. Second operand 4 states. Result 52 states and 67 transitions. Complement of second has 12 states. [2020-11-30 00:23:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:23:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:23:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-30 00:23:20,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-30 00:23:20,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:20,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-30 00:23:20,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:20,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-30 00:23:20,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:20,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 67 transitions. [2020-11-30 00:23:20,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 00:23:20,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 32 states and 45 transitions. [2020-11-30 00:23:20,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-11-30 00:23:20,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-30 00:23:20,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 45 transitions. [2020-11-30 00:23:20,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:23:20,594 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 45 transitions. [2020-11-30 00:23:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 45 transitions. [2020-11-30 00:23:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-11-30 00:23:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:23:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2020-11-30 00:23:20,634 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2020-11-30 00:23:20,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:23:20,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:23:20,639 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2020-11-30 00:23:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:20,723 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-11-30 00:23:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:23:20,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-30 00:23:20,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 00:23:20,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 34 transitions. [2020-11-30 00:23:20,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-11-30 00:23:20,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-30 00:23:20,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2020-11-30 00:23:20,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:23:20,731 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-30 00:23:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2020-11-30 00:23:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-11-30 00:23:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:23:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-11-30 00:23:20,734 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-11-30 00:23:20,734 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-11-30 00:23:20,735 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:23:20,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2020-11-30 00:23:20,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 00:23:20,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:23:20,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:23:20,737 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:20,737 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:23:20,738 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 207#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 200#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 201#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 196#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 195#multENTRY ~n := #in~n;~m := #in~m; 197#L18 assume !(~m < 0); 212#L21 assume !(0 == ~m); 202#L24 call #t~ret8 := mult(~n, ~m - 1);< 199#multENTRY [2020-11-30 00:23:20,738 INFO L796 eck$LassoCheckResult]: Loop: 199#multENTRY ~n := #in~n;~m := #in~m; 216#L18 assume ~m < 0; 205#L19 call #t~ret7 := mult(~n, -~m);< 199#multENTRY [2020-11-30 00:23:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 1 times [2020-11-30 00:23:20,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:20,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007632304] [2020-11-30 00:23:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:20,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:20,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:20,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 2 times [2020-11-30 00:23:20,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:20,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6346609] [2020-11-30 00:23:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:20,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:20,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:20,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,789 INFO L82 PathProgramCache]: Analyzing trace with hash -558597032, now seen corresponding path program 1 times [2020-11-30 00:23:20,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:20,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112337987] [2020-11-30 00:23:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:20,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112337987] [2020-11-30 00:23:20,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:20,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:23:20,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115945196] [2020-11-30 00:23:20,919 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:20,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:20,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:20,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:20,920 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:23:20,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:20,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:20,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:20,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-11-30 00:23:20,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:20,920 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:20,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:20,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:20,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:20,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:20,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:20,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:20,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,034 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:21,035 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:21,043 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:21,048 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:21,103 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,113 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:21,114 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:21,167 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:21,171 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:21,227 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:21,234 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:21,290 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:23:21,339 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,459 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:23:21,461 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:21,462 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:21,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:21,462 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:21,462 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:23:21,462 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,462 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:21,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:21,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-11-30 00:23:21,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:21,462 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:21,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:21,569 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:21,569 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,575 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 [2020-11-30 00:23:21,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:21,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:21,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:21,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:21,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:21,579 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:21,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,581 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,633 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 [2020-11-30 00:23:21,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:21,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:21,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:21,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:21,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:21,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:21,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,641 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,680 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 [2020-11-30 00:23:21,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:21,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:21,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:21,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:21,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:21,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:21,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,695 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,741 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 [2020-11-30 00:23:21,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:21,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:21,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:21,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:21,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:21,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:21,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:21,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,766 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:23:21,766 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:21,771 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:23:21,771 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:23:21,771 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:23:21,771 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:21,806 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:23:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:21,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:23:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:21,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:23:21,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:21,960 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 [2020-11-30 00:23:21,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-30 00:23:22,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 73 states and 92 transitions. Complement of second has 15 states. [2020-11-30 00:23:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:23:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:23:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-11-30 00:23:22,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 00:23:22,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:22,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-30 00:23:22,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:22,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 6 letters. [2020-11-30 00:23:22,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:22,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 92 transitions. [2020-11-30 00:23:22,093 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 00:23:22,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 51 states and 66 transitions. [2020-11-30 00:23:22,096 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-11-30 00:23:22,096 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-11-30 00:23:22,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 66 transitions. [2020-11-30 00:23:22,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:23:22,097 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-11-30 00:23:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 66 transitions. [2020-11-30 00:23:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-11-30 00:23:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 00:23:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-11-30 00:23:22,106 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-11-30 00:23:22,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:22,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:23:22,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:23:22,107 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2020-11-30 00:23:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:22,241 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-11-30 00:23:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:23:22,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2020-11-30 00:23:22,245 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-30 00:23:22,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 48 transitions. [2020-11-30 00:23:22,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-30 00:23:22,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-11-30 00:23:22,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 48 transitions. [2020-11-30 00:23:22,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:23:22,248 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-30 00:23:22,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 48 transitions. [2020-11-30 00:23:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-30 00:23:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-30 00:23:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-30 00:23:22,253 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-30 00:23:22,254 INFO L594 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-30 00:23:22,254 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:23:22,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 48 transitions. [2020-11-30 00:23:22,255 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-30 00:23:22,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:23:22,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:23:22,257 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:22,257 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:23:22,257 INFO L794 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 480#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 472#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 473#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 483#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 489#multENTRY ~n := #in~n;~m := #in~m; 495#L18 assume !(~m < 0); 493#L21 assume 0 == ~m;#res := 0; 494#multFINAL assume true; 507#multEXIT >#48#return; 506#L36-1 main_~res1~0 := main_#t~ret11;havoc main_#t~ret11; 502#L37 call main_#t~ret12 := mult(main_~n~0, main_~m~0);< 505#multENTRY [2020-11-30 00:23:22,257 INFO L796 eck$LassoCheckResult]: Loop: 505#multENTRY ~n := #in~n;~m := #in~m; 504#L18 assume ~m < 0; 501#L19 call #t~ret7 := mult(~n, -~m);< 505#multENTRY [2020-11-30 00:23:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:22,258 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 1 times [2020-11-30 00:23:22,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:22,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449172846] [2020-11-30 00:23:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:22,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:22,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:22,298 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:22,299 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 3 times [2020-11-30 00:23:22,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:22,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99490460] [2020-11-30 00:23:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:22,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:22,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:22,307 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:22,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:22,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1141566508, now seen corresponding path program 1 times [2020-11-30 00:23:22,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:22,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910803674] [2020-11-30 00:23:22,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-30 00:23:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:22,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910803674] [2020-11-30 00:23:22,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:22,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:23:22,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896065822] [2020-11-30 00:23:22,462 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:22,462 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:22,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:22,462 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:22,462 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:23:22,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:22,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:22,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:22,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-11-30 00:23:22,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:22,463 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:22,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,594 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:22,595 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:22,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:22,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:22,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:22,600 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret7=0} Honda state: {mult_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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) [2020-11-30 00:23:22,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:22,631 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:22,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:22,633 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret8=0} Honda state: {mult_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:22,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:22,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:22,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:22,661 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:22,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:22,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:22,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:22,695 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:22,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:22,721 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:22,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:23:22,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:22,828 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:23:22,829 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:22,830 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:22,830 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:22,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:22,830 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:23:22,830 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:22,830 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:22,830 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:22,830 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-11-30 00:23:22,830 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:22,830 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:22,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:22,963 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:22,963 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:22,967 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 [2020-11-30 00:23:22,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:22,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:22,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:22,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:22,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:22,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:22,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:22,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/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 [2020-11-30 00:23:23,002 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 [2020-11-30 00:23:23,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:23,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:23,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:23,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:23,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:23,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:23,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:23,007 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,031 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 [2020-11-30 00:23:23,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:23,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:23,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:23,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:23,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:23,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:23,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:23,056 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,087 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 [2020-11-30 00:23:23,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:23,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:23,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:23,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:23,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:23,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:23,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:23,092 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,116 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 [2020-11-30 00:23:23,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:23,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:23,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:23,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:23,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:23,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:23,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:23,121 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:23:23,135 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:23:23,135 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:23:23,165 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:23:23,165 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:23:23,166 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:23:23,166 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,205 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:23:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:23,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:23:23,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:23,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:23:23,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:23,321 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 [2020-11-30 00:23:23,321 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-11-30 00:23:23,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 82 states and 91 transitions. Complement of second has 14 states. [2020-11-30 00:23:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:23:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:23:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-30 00:23:23,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-30 00:23:23,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:23,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-30 00:23:23,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:23,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2020-11-30 00:23:23,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:23,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 91 transitions. [2020-11-30 00:23:23,460 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 00:23:23,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 63 states and 71 transitions. [2020-11-30 00:23:23,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2020-11-30 00:23:23,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2020-11-30 00:23:23,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 71 transitions. [2020-11-30 00:23:23,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:23:23,463 INFO L691 BuchiCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-11-30 00:23:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 71 transitions. [2020-11-30 00:23:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-11-30 00:23:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:23:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-11-30 00:23:23,468 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-11-30 00:23:23,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:23:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:23:23,470 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-11-30 00:23:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:23,502 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-11-30 00:23:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:23:23,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2020-11-30 00:23:23,503 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 00:23:23,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 36 states and 40 transitions. [2020-11-30 00:23:23,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-30 00:23:23,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-30 00:23:23,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2020-11-30 00:23:23,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:23:23,505 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-30 00:23:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2020-11-30 00:23:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-30 00:23:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:23:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-30 00:23:23,509 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-30 00:23:23,509 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-30 00:23:23,509 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:23:23,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 36 transitions. [2020-11-30 00:23:23,510 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 00:23:23,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:23:23,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:23:23,511 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:23,511 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:23:23,511 INFO L794 eck$LassoCheckResult]: Stem: 767#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 766#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 760#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 761#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 769#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 774#multENTRY ~n := #in~n;~m := #in~m; 780#L18 assume !(~m < 0); 777#L21 assume 0 == ~m;#res := 0; 776#multFINAL assume true; 775#multEXIT >#48#return; 771#L36-1 main_~res1~0 := main_#t~ret11;havoc main_#t~ret11; 759#L37 call main_#t~ret12 := mult(main_~n~0, main_~m~0);< 756#multENTRY [2020-11-30 00:23:23,511 INFO L796 eck$LassoCheckResult]: Loop: 756#multENTRY ~n := #in~n;~m := #in~m; 758#L18 assume !(~m < 0); 768#L21 assume !(0 == ~m); 757#L24 call #t~ret8 := mult(~n, ~m - 1);< 756#multENTRY [2020-11-30 00:23:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 2 times [2020-11-30 00:23:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:23,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591353741] [2020-11-30 00:23:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:23,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:23,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:23,560 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 1 times [2020-11-30 00:23:23,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:23,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064087300] [2020-11-30 00:23:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:23,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:23,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:23,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:23,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1028821475, now seen corresponding path program 1 times [2020-11-30 00:23:23,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:23,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376326763] [2020-11-30 00:23:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:23,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:23,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:23,626 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:23,735 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:23,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:23,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:23,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:23,735 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:23:23,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:23,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:23,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-11-30 00:23:23,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:23,736 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:23,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:23,896 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:23,897 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:23,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:23,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:23,905 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:23,928 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:23,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:23:23,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:24,015 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:23:24,016 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:24,016 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:24,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:24,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:24,017 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:23:24,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:24,017 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:24,017 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-11-30 00:23:24,017 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:24,017 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:24,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,142 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:24,142 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,145 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 [2020-11-30 00:23:24,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:24,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:24,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:24,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:24,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:24,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:24,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:24,153 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:23:24,202 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 [2020-11-30 00:23:24,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:24,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:24,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:24,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:24,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:24,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:24,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,234 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 [2020-11-30 00:23:24,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:24,236 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:24,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:24,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:24,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:24,237 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:24,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:24,238 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,263 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 [2020-11-30 00:23:24,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:24,265 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:24,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:24,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:24,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:24,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:24,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:24,268 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:23:24,270 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:23:24,270 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,272 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:23:24,272 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:23:24,272 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:23:24,273 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2020-11-30 00:23:24,296 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:23:24,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:24,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:23:24,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:24,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:23:24,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:24,475 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2020-11-30 00:23:24,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6 Second operand 6 states. [2020-11-30 00:23:24,632 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6. Second operand 6 states. Result 42 states and 46 transitions. Complement of second has 17 states. [2020-11-30 00:23:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:23:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:23:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-11-30 00:23:24,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-30 00:23:24,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:24,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-30 00:23:24,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:24,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 8 letters. [2020-11-30 00:23:24,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:24,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 46 transitions. [2020-11-30 00:23:24,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:23:24,638 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 16 states and 16 transitions. [2020-11-30 00:23:24,638 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-30 00:23:24,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-30 00:23:24,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 16 transitions. [2020-11-30 00:23:24,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:23:24,639 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 00:23:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 16 transitions. [2020-11-30 00:23:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 9. [2020-11-30 00:23:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-30 00:23:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-30 00:23:24,642 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-30 00:23:24,642 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-30 00:23:24,642 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:23:24,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 9 transitions. [2020-11-30 00:23:24,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:23:24,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:23:24,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:23:24,645 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:23:24,645 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:23:24,645 INFO L794 eck$LassoCheckResult]: Stem: 927#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 921#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 922#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 929#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 926#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 923#multENTRY [2020-11-30 00:23:24,646 INFO L796 eck$LassoCheckResult]: Loop: 923#multENTRY ~n := #in~n;~m := #in~m; 925#L18 assume !(~m < 0); 928#L21 assume !(0 == ~m); 924#L24 call #t~ret8 := mult(~n, ~m - 1);< 923#multENTRY [2020-11-30 00:23:24,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:24,646 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 2 times [2020-11-30 00:23:24,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:24,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145513138] [2020-11-30 00:23:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:24,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:24,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:24,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 2 times [2020-11-30 00:23:24,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:24,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354252886] [2020-11-30 00:23:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:24,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:24,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:24,709 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 2 times [2020-11-30 00:23:24,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:24,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556649239] [2020-11-30 00:23:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:24,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:23:24,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:23:24,777 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:23:24,912 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:24,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:24,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:24,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:24,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:23:24,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:24,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:24,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:24,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-11-30 00:23:24,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:24,913 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:24,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:24,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,027 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:25,027 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:25,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:25,032 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:25,032 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:25,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:25,061 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:25,061 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:25,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:25,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:25,090 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/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:25,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:25,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:23:25,121 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret7=0} Honda state: {mult_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:23:25,150 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:23:25,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:23:25,209 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:23:25,210 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:23:25,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:23:25,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:23:25,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:23:25,211 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:23:25,211 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:23:25,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:23:25,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-11-30 00:23:25,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:23:25,211 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:23:25,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:23:25,378 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:23:25,379 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,388 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 [2020-11-30 00:23:25,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:25,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:25,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:25,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:25,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:25,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:25,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:25,393 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,426 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 [2020-11-30 00:23:25,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:25,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:25,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:25,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:25,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:25,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:25,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:25,430 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,461 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 [2020-11-30 00:23:25,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:25,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:25,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:25,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:25,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:25,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:25,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:25,464 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,493 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 [2020-11-30 00:23:25,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:23:25,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:23:25,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:23:25,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:23:25,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:23:25,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:23:25,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:23:25,501 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:23:25,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:23:25,505 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2137e9d5-eddc-41c4-832e-b4ad92091fe0/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:23:25,509 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:23:25,509 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:23:25,509 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:23:25,510 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:23:25,550 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:23:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:25,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:23:25,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:25,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:23:25,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:23:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:25,641 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-30 00:23:25,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1 Second operand 5 states. [2020-11-30 00:23:25,707 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1. Second operand 5 states. Result 19 states and 19 transitions. Complement of second has 15 states. [2020-11-30 00:23:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:23:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:23:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9 transitions. [2020-11-30 00:23:25,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 00:23:25,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:25,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-30 00:23:25,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:25,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2020-11-30 00:23:25,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:23:25,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 19 transitions. [2020-11-30 00:23:25,711 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:23:25,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-11-30 00:23:25,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:23:25,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:23:25,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:23:25,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:23:25,711 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:23:25,711 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:23:25,711 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:23:25,711 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:23:25,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:23:25,711 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:23:25,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:23:25,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:23:25 BoogieIcfgContainer [2020-11-30 00:23:25,716 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:23:25,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:23:25,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:23:25,717 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:23:25,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:23:18" (3/4) ... [2020-11-30 00:23:25,722 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:23:25,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:23:25,724 INFO L168 Benchmark]: Toolchain (without parser) took 8321.07 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 57.2 MB in the beginning and 36.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 64.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:25,724 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 88.1 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:23:25,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.95 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 64.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:25,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:23:25,726 INFO L168 Benchmark]: Boogie Preprocessor took 46.19 ms. Allocated memory is still 88.1 MB. Free memory was 63.4 MB in the beginning and 62.5 MB in the end (delta: 934.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:25,727 INFO L168 Benchmark]: RCFGBuilder took 343.45 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 50.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:25,728 INFO L168 Benchmark]: BuchiAutomizer took 7563.56 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 50.0 MB in the beginning and 36.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:25,728 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 132.1 MB. Free memory is still 36.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:23:25,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 88.1 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.95 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 64.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.19 ms. Allocated memory is still 88.1 MB. Free memory was 63.4 MB in the beginning and 62.5 MB in the end (delta: 934.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 343.45 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 50.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7563.56 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 50.0 MB in the beginning and 36.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 132.1 MB. Free memory is still 36.3 MB. There was no memory consumed. Max. memory is 16.1 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 6 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 5.5s. Construction of modules took 0.3s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 42 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 128 SDtfs, 140 SDslu, 112 SDs, 0 SdLazy, 165 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf97 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf94 smp86 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...