./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive/MultCommutative-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.0-5485861 [2020-10-26 05:43:38,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:43:38,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:43:38,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:43:38,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:43:38,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:43:38,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:43:38,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:43:38,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:43:38,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:43:38,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:43:38,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:43:38,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:43:38,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:43:38,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:43:38,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:43:38,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:43:38,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:43:38,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:43:38,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:43:38,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:43:38,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:43:38,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:43:38,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:43:38,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:43:38,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:43:38,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:43:38,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:43:38,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:43:38,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:43:38,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:43:38,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:43:38,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:43:38,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:43:38,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:43:38,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:43:38,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:43:38,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:43:38,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:43:38,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:43:38,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:43:38,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:43:39,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:43:39,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:43:39,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:43:39,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:43:39,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:43:39,016 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:43:39,016 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:43:39,017 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:43:39,017 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:43:39,018 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:43:39,019 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:43:39,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:43:39,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:43:39,020 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:43:39,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:43:39,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:43:39,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:43:39,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:43:39,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:43:39,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:43:39,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:43:39,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:43:39,022 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:43:39,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:43:39,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:43:39,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:43:39,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:43:39,024 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:43:39,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:43:39,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:43:39,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:43:39,025 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:43:39,028 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:43:39,028 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbc43fe9834b77811d120f68e3a868f414cdd105 [2020-10-26 05:43:39,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:43:39,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:43:39,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:43:39,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:43:39,527 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:43:39,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2020-10-26 05:43:39,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e910e5be3/a2f63f98a76b43ce9d539bcfed805ead/FLAGe3d040166 [2020-10-26 05:43:40,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:43:40,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2020-10-26 05:43:40,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e910e5be3/a2f63f98a76b43ce9d539bcfed805ead/FLAGe3d040166 [2020-10-26 05:43:40,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e910e5be3/a2f63f98a76b43ce9d539bcfed805ead [2020-10-26 05:43:40,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:43:40,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:43:40,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:43:40,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:43:40,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:43:40,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:43:40" (1/1) ... [2020-10-26 05:43:40,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac9a355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:40, skipping insertion in model container [2020-10-26 05:43:40,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:43:40" (1/1) ... [2020-10-26 05:43:40,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:43:40,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:43:41,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:43:41,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:43:41,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:43:41,101 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:43:41,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41 WrapperNode [2020-10-26 05:43:41,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:43:41,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:43:41,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:43:41,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:43:41,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:43:41,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:43:41,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:43:41,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:43:41,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... [2020-10-26 05:43:41,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:43:41,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:43:41,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:43:41,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:43:41,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-10-26 05:43:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-10-26 05:43:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:43:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:43:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:43:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:43:41,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:43:41,760 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:43:41,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:41 BoogieIcfgContainer [2020-10-26 05:43:41,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:43:41,769 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:43:41,772 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:43:41,782 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:43:41,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:41,784 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:43:40" (1/3) ... [2020-10-26 05:43:41,786 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38a40ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:43:41, skipping insertion in model container [2020-10-26 05:43:41,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:41,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:41" (2/3) ... [2020-10-26 05:43:41,787 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38a40ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:43:41, skipping insertion in model container [2020-10-26 05:43:41,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:41,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:41" (3/3) ... [2020-10-26 05:43:41,790 INFO L373 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2020-10-26 05:43:41,858 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:43:41,859 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:43:41,859 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:43:41,859 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:43:41,859 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:43:41,860 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:43:41,860 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:43:41,860 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:43:41,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-10-26 05:43:41,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 05:43:41,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:41,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:41,919 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 05:43:41,919 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:41,920 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:43:41,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-10-26 05:43:41,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 05:43:41,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:41,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:41,925 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 05:43:41,925 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:41,935 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 [2020-10-26 05:43:41,936 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 [2020-10-26 05:43:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:41,946 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 1 times [2020-10-26 05:43:41,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:41,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373109953] [2020-10-26 05:43:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:42,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:42,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:42,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:42,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:42,192 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 1 times [2020-10-26 05:43:42,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:42,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101872583] [2020-10-26 05:43:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:42,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:42,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:42,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1236132511, now seen corresponding path program 1 times [2020-10-26 05:43:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:42,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843256989] [2020-10-26 05:43:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:42,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843256989] [2020-10-26 05:43:42,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 05:43:42,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 05:43:42,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997760346] [2020-10-26 05:43:42,569 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:42,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:42,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:42,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:42,570 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:42,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:42,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:42,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:42,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-10-26 05:43:42,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:42,571 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:42,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,779 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:42,780 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:42,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,791 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 [2020-10-26 05:43:42,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:42,805 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:42,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,845 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 [2020-10-26 05:43:42,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:42,850 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:42,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:42,892 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:42,893 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:42,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:42,933 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:42,934 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:42,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,971 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:42,977 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:42,977 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:43,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:43,016 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:43,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:43,058 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:43,149 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:43,154 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:43,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:43,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:43,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:43,155 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:43,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:43,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:43,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:43,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-10-26 05:43:43,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:43,155 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:43,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:43,254 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:43,260 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:43,273 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 [2020-10-26 05:43:43,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:43,284 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:43,329 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 [2020-10-26 05:43:43,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:43,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:43,375 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 [2020-10-26 05:43:43,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,379 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 [2020-10-26 05:43:43,382 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:43,423 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 [2020-10-26 05:43:43,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,428 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 [2020-10-26 05:43:43,431 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:43,459 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 [2020-10-26 05:43:43,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:43,474 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:43,507 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 [2020-10-26 05:43:43,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:43,522 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:43,548 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 [2020-10-26 05:43:43,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:43,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:43,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:43,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:43,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:43,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:43,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:43,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:43,574 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 05:43:43,574 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:43,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:43,587 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:43,587 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:43,588 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:43,626 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:43,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:43,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 05:43:43,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:43,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:43:43,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:43,891 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 [2020-10-26 05:43:43,893 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states. Second operand 4 states. [2020-10-26 05:43:44,026 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. [2020-10-26 05:43:44,027 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 [2020-10-26 05:43:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 05:43:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-26 05:43:44,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-26 05:43:44,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:44,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-26 05:43:44,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:44,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-26 05:43:44,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:44,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 67 transitions. [2020-10-26 05:43:44,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 05:43:44,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 32 states and 45 transitions. [2020-10-26 05:43:44,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-10-26 05:43:44,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-26 05:43:44,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 45 transitions. [2020-10-26 05:43:44,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:44,060 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 45 transitions. [2020-10-26 05:43:44,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 45 transitions. [2020-10-26 05:43:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-26 05:43:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 05:43:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2020-10-26 05:43:44,099 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2020-10-26 05:43:44,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:43:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 05:43:44,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 05:43:44,105 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2020-10-26 05:43:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:43:44,193 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-10-26 05:43:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 05:43:44,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-10-26 05:43:44,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 05:43:44,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 34 transitions. [2020-10-26 05:43:44,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-10-26 05:43:44,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-26 05:43:44,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2020-10-26 05:43:44,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:43:44,201 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-26 05:43:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2020-10-26 05:43:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-10-26 05:43:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-26 05:43:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-10-26 05:43:44,208 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-26 05:43:44,209 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-26 05:43:44,209 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:43:44,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2020-10-26 05:43:44,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 05:43:44,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:44,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:44,214 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:44,214 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:44,215 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 [2020-10-26 05:43:44,215 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 [2020-10-26 05:43:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:44,216 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 1 times [2020-10-26 05:43:44,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:44,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910137439] [2020-10-26 05:43:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:44,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:44,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:44,309 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:44,312 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 2 times [2020-10-26 05:43:44,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:44,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117447088] [2020-10-26 05:43:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:44,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:44,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:44,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash -558597032, now seen corresponding path program 1 times [2020-10-26 05:43:44,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:44,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914193214] [2020-10-26 05:43:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:44,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914193214] [2020-10-26 05:43:44,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 05:43:44,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 05:43:44,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691527003] [2020-10-26 05:43:44,439 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:44,440 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:44,440 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:44,440 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:44,440 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:44,440 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:44,440 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:44,441 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-10-26 05:43:44,441 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:44,441 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:44,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,517 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:44,518 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:44,522 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:44,527 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:44,527 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:44,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:44,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:44,579 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:44,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:44,617 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 [2020-10-26 05:43:44,621 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:44,621 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:44,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:44,657 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:44,657 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:44,684 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:44,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:44,809 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:44,811 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:44,811 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:44,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:44,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:44,812 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:44,812 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:44,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:44,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-10-26 05:43:44,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:44,812 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:44,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:44,903 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:44,903 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:44,916 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:44,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:44,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:44,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:44,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:44,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:44,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:44,920 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 [2020-10-26 05:43:44,926 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,961 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 [2020-10-26 05:43:44,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:44,964 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:44,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:44,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:44,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:44,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:44,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:44,968 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:44,995 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 [2020-10-26 05:43:44,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:44,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:44,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:44,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:44,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:44,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:44,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:45,001 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:45,024 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 [2020-10-26 05:43:45,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:45,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:45,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:45,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:45,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:45,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:45,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:45,046 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:45,052 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 05:43:45,053 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:45,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:45,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:45,057 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:45,057 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2020-10-26 05:43:45,081 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:45,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:45,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:43:45,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:45,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:43:45,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:45,177 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 [2020-10-26 05:43:45,177 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-26 05:43:45,331 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. [2020-10-26 05:43:45,331 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 [2020-10-26 05:43:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 05:43:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-10-26 05:43:45,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-26 05:43:45,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:45,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 12 letters. Loop has 3 letters. [2020-10-26 05:43:45,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:45,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 6 letters. [2020-10-26 05:43:45,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:45,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 92 transitions. [2020-10-26 05:43:45,338 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-26 05:43:45,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 51 states and 66 transitions. [2020-10-26 05:43:45,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-10-26 05:43:45,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-10-26 05:43:45,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 66 transitions. [2020-10-26 05:43:45,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:45,342 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-26 05:43:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 66 transitions. [2020-10-26 05:43:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-10-26 05:43:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 05:43:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-26 05:43:45,350 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-26 05:43:45,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:43:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 05:43:45,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 05:43:45,351 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2020-10-26 05:43:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:43:45,415 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-26 05:43:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 05:43:45,416 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2020-10-26 05:43:45,419 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-10-26 05:43:45,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 48 transitions. [2020-10-26 05:43:45,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-26 05:43:45,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-10-26 05:43:45,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 48 transitions. [2020-10-26 05:43:45,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:43:45,422 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-26 05:43:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 48 transitions. [2020-10-26 05:43:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-26 05:43:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 05:43:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-26 05:43:45,428 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-26 05:43:45,428 INFO L594 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-26 05:43:45,428 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 05:43:45,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 48 transitions. [2020-10-26 05:43:45,430 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-10-26 05:43:45,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:45,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:45,431 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:45,431 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:45,431 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 [2020-10-26 05:43:45,432 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 [2020-10-26 05:43:45,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:45,432 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 1 times [2020-10-26 05:43:45,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:45,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311316901] [2020-10-26 05:43:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:45,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:45,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:45,463 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:45,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:45,464 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 3 times [2020-10-26 05:43:45,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:45,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259352486] [2020-10-26 05:43:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:45,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:45,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:45,474 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1141566508, now seen corresponding path program 1 times [2020-10-26 05:43:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:45,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036099984] [2020-10-26 05:43:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-26 05:43:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:45,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036099984] [2020-10-26 05:43:45,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 05:43:45,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 05:43:45,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639370477] [2020-10-26 05:43:45,627 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:45,627 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:45,627 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:45,627 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:45,627 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:45,627 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:45,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:45,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:45,628 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-10-26 05:43:45,628 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:45,628 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:45,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,730 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:45,730 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:45,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:45,735 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:45,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:45,740 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:45,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:45,778 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 [2020-10-26 05:43:45,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:45,783 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:45,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:45,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:45,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:45,818 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:45,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:45,844 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:45,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:45,848 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:45,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:45,874 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:45,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:45,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:45,978 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:45,980 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:45,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:45,980 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:45,980 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:45,980 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:45,980 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:45,980 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:45,980 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:45,980 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-10-26 05:43:45,980 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:45,980 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:45,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:45,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,072 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:46,073 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,083 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 [2020-10-26 05:43:46,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:46,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:46,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:46,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:46,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:46,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:46,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,094 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,133 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 [2020-10-26 05:43:46,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:46,135 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:46,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:46,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:46,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:46,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:46,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,139 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,179 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 [2020-10-26 05:43:46,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:46,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:46,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:46,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:46,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:46,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:46,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,186 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,227 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 [2020-10-26 05:43:46,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:46,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:46,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:46,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:46,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:46,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:46,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,234 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,274 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 [2020-10-26 05:43:46,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:46,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:46,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:46,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:46,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:46,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:46,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,283 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:46,287 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 05:43:46,287 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,291 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:46,291 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:46,292 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:46,292 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 [2020-10-26 05:43:46,317 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:46,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:43:46,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:46,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:43:46,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:46,476 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 [2020-10-26 05:43:46,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-10-26 05:43:46,587 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. [2020-10-26 05:43:46,588 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 [2020-10-26 05:43:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:43:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-10-26 05:43:46,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2020-10-26 05:43:46,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:46,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-26 05:43:46,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:46,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2020-10-26 05:43:46,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:46,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 91 transitions. [2020-10-26 05:43:46,594 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-26 05:43:46,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 63 states and 71 transitions. [2020-10-26 05:43:46,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2020-10-26 05:43:46,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2020-10-26 05:43:46,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 71 transitions. [2020-10-26 05:43:46,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:46,597 INFO L691 BuchiCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-26 05:43:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 71 transitions. [2020-10-26 05:43:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-10-26 05:43:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 05:43:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-26 05:43:46,603 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-26 05:43:46,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:43:46,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 05:43:46,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 05:43:46,604 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-10-26 05:43:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:43:46,640 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-26 05:43:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 05:43:46,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2020-10-26 05:43:46,642 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-26 05:43:46,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 36 states and 40 transitions. [2020-10-26 05:43:46,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-26 05:43:46,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-26 05:43:46,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2020-10-26 05:43:46,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:43:46,644 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-26 05:43:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2020-10-26 05:43:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-26 05:43:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 05:43:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-26 05:43:46,648 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 05:43:46,649 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 05:43:46,649 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 05:43:46,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 36 transitions. [2020-10-26 05:43:46,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-26 05:43:46,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:46,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:46,651 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:46,651 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 05:43:46,652 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 [2020-10-26 05:43:46,652 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 [2020-10-26 05:43:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 2 times [2020-10-26 05:43:46,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:46,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55894464] [2020-10-26 05:43:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:46,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:46,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:46,681 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:46,682 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 1 times [2020-10-26 05:43:46,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:46,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285234218] [2020-10-26 05:43:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:46,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:46,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:46,692 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:46,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1028821475, now seen corresponding path program 1 times [2020-10-26 05:43:46,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:46,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936256379] [2020-10-26 05:43:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:46,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:46,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:46,724 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:46,808 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:46,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:46,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:46,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:46,808 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:46,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:46,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:46,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-10-26 05:43:46,809 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:46,809 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:46,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:46,932 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:46,933 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:46,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:46,940 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:46,948 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:46,948 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:46,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:46,974 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:47,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:47,002 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:47,061 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:47,063 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:47,063 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:47,063 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:47,063 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:47,063 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:47,063 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:47,063 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:47,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:47,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-10-26 05:43:47,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:47,064 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:47,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,169 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:47,170 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:47,186 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 [2020-10-26 05:43:47,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:47,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:47,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:47,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:47,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:47,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:47,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:47,194 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:47,216 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 [2020-10-26 05:43:47,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:47,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:47,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:47,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:47,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:47,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:47,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:47,224 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,249 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 [2020-10-26 05:43:47,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:47,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:47,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:47,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:47,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:47,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:47,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:47,254 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,278 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 [2020-10-26 05:43:47,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:47,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:47,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:47,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:47,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:47,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:47,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:47,284 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:47,287 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 05:43:47,287 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,290 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:47,290 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:47,290 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:47,290 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2020-10-26 05:43:47,313 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:47,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:43:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:47,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:43:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:47,486 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 [2020-10-26 05:43:47,487 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6 Second operand 6 states. [2020-10-26 05:43:47,638 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. [2020-10-26 05:43:47,639 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 [2020-10-26 05:43:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 05:43:47,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-10-26 05:43:47,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-26 05:43:47,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:47,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-26 05:43:47,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:47,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 8 letters. [2020-10-26 05:43:47,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:47,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 46 transitions. [2020-10-26 05:43:47,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:47,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 16 states and 16 transitions. [2020-10-26 05:43:47,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-26 05:43:47,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-26 05:43:47,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 16 transitions. [2020-10-26 05:43:47,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:43:47,650 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-26 05:43:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 16 transitions. [2020-10-26 05:43:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 9. [2020-10-26 05:43:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:43:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-26 05:43:47,653 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-26 05:43:47,653 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-26 05:43:47,653 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 05:43:47,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 9 transitions. [2020-10-26 05:43:47,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:47,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:47,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:47,654 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 05:43:47,654 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 05:43:47,654 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 [2020-10-26 05:43:47,655 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 [2020-10-26 05:43:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 2 times [2020-10-26 05:43:47,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:47,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237052754] [2020-10-26 05:43:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:47,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:47,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:47,676 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:47,677 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 2 times [2020-10-26 05:43:47,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:47,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275745595] [2020-10-26 05:43:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:47,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:47,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:47,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:47,686 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 2 times [2020-10-26 05:43:47,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:47,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26146719] [2020-10-26 05:43:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:47,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:47,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:47,708 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:47,775 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:47,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:47,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:47,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:47,775 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:47,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:47,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:47,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:47,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-10-26 05:43:47,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:47,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:47,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:47,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:47,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:47,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:47,894 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:47,895 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:47,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:47,921 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:47,921 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:47,944 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:47,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:47,949 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:47,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:47,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:47,977 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:47,977 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:48,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:48,003 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:48,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:48,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:48,054 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:48,056 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:48,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:48,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:48,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:48,057 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:48,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:48,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:48,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:48,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-10-26 05:43:48,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:48,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:48,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:48,175 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:48,176 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:48,180 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 [2020-10-26 05:43:48,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:48,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:48,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:48,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:48,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:48,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:48,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:48,185 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:48,231 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 [2020-10-26 05:43:48,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:48,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:48,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:48,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:48,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:48,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:48,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:48,242 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:48,280 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 [2020-10-26 05:43:48,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:48,283 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:48,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:48,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:48,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:48,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:48,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:48,285 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 05:43:48,310 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 [2020-10-26 05:43:48,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:48,312 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:48,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:48,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:48,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:48,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:48,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:48,316 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:48,320 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:43:48,320 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:48,333 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:48,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:48,334 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:48,334 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 [2020-10-26 05:43:48,357 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:48,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 05:43:48,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:48,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:43:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:48,500 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 [2020-10-26 05:43:48,500 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1 Second operand 5 states. [2020-10-26 05:43:48,591 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. [2020-10-26 05:43:48,592 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 [2020-10-26 05:43:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:43:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9 transitions. [2020-10-26 05:43:48,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 05:43:48,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:48,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-26 05:43:48,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:48,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-26 05:43:48,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:48,594 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 19 transitions. [2020-10-26 05:43:48,595 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:43:48,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-10-26 05:43:48,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:43:48,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:43:48,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:43:48,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:43:48,596 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:43:48,596 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:43:48,596 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:43:48,596 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 05:43:48,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:43:48,596 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:43:48,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:43:48,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:43:48 BoogieIcfgContainer [2020-10-26 05:43:48,605 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:43:48,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:43:48,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:43:48,606 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:43:48,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:41" (3/4) ... [2020-10-26 05:43:48,611 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:43:48,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:43:48,614 INFO L168 Benchmark]: Toolchain (without parser) took 7829.66 ms. Allocated memory was 44.0 MB in the beginning and 107.0 MB in the end (delta: 62.9 MB). Free memory was 21.2 MB in the beginning and 75.2 MB in the end (delta: -54.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-10-26 05:43:48,614 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 44.0 MB. Free memory was 22.0 MB in the beginning and 21.9 MB in the end (delta: 52.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:43:48,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.76 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 20.6 MB in the beginning and 37.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-26 05:43:48,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.13 ms. Allocated memory is still 60.8 MB. Free memory was 37.2 MB in the beginning and 35.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:43:48,616 INFO L168 Benchmark]: Boogie Preprocessor took 27.32 ms. Allocated memory is still 60.8 MB. Free memory was 35.9 MB in the beginning and 35.0 MB in the end (delta: 946.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 05:43:48,617 INFO L168 Benchmark]: RCFGBuilder took 590.48 ms. Allocated memory is still 60.8 MB. Free memory was 35.0 MB in the beginning and 38.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-26 05:43:48,618 INFO L168 Benchmark]: BuchiAutomizer took 6835.91 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 38.1 MB in the beginning and 75.2 MB in the end (delta: -37.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-10-26 05:43:48,618 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 107.0 MB. Free memory is still 75.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:43:48,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 44.0 MB. Free memory was 22.0 MB in the beginning and 21.9 MB in the end (delta: 52.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.76 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 20.6 MB in the beginning and 37.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.13 ms. Allocated memory is still 60.8 MB. Free memory was 37.2 MB in the beginning and 35.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.32 ms. Allocated memory is still 60.8 MB. Free memory was 35.9 MB in the beginning and 35.0 MB in the end (delta: 946.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 590.48 ms. Allocated memory is still 60.8 MB. Free memory was 35.0 MB in the beginning and 38.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6835.91 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 38.1 MB in the beginning and 75.2 MB in the end (delta: -37.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.27 ms. Allocated memory is still 107.0 MB. Free memory is still 75.2 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 6.7s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 4.8s. Construction of modules took 0.2s. Büchi inclusion checks took 1.4s. 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, 0.2s 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: 23ms 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...