./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3df7720ba3b76dcfdecddff77e2f89a40d99e447 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:05,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:05,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:05,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:05,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:05,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:05,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:05,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:05,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:05,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:05,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:05,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:05,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:05,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:05,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:05,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:05,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:05,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:05,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:05,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:05,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:05,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:05,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:05,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:05,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:05,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:05,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:05,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:05,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:05,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:05,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:05,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:05,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:05,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:05,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:05,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:05,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:05,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:05,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:05,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:05,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:05,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:02:05,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:05,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:05,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:05,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:05,865 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:05,866 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:02:05,866 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:02:05,866 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:02:05,866 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:02:05,866 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:02:05,866 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:02:05,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:05,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:05,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:05,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:05,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:02:05,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:02:05,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:02:05,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:05,868 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:02:05,868 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:05,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:02:05,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:05,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:05,869 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:02:05,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:05,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:05,869 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:02:05,870 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:02:05,870 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2019-10-22 09:02:05,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:05,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:05,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:05,911 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:05,912 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:05,913 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2019-10-22 09:02:05,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/data/aeacaf799/5e05cb89fa584fa3b1358fe163641096/FLAGeac865b69 [2019-10-22 09:02:06,374 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:06,375 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2019-10-22 09:02:06,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/data/aeacaf799/5e05cb89fa584fa3b1358fe163641096/FLAGeac865b69 [2019-10-22 09:02:06,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/data/aeacaf799/5e05cb89fa584fa3b1358fe163641096 [2019-10-22 09:02:06,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:06,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:06,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:06,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:06,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:06,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:06" (1/1) ... [2019-10-22 09:02:06,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c75c6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:06, skipping insertion in model container [2019-10-22 09:02:06,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:06" (1/1) ... [2019-10-22 09:02:06,790 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:06,804 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:06,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:06,948 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:07,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:07,034 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:07,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07 WrapperNode [2019-10-22 09:02:07,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:07,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:07,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:07,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:07,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:07,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:07,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:07,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:07,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:07,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:07,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:07,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:07,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-10-22 09:02:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-10-22 09:02:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:07,319 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:07,327 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:02:07,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:07 BoogieIcfgContainer [2019-10-22 09:02:07,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:07,329 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:02:07,330 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:02:07,334 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:02:07,335 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:07,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:02:06" (1/3) ... [2019-10-22 09:02:07,336 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61bde219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:07, skipping insertion in model container [2019-10-22 09:02:07,337 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:07,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (2/3) ... [2019-10-22 09:02:07,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61bde219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:07, skipping insertion in model container [2019-10-22 09:02:07,337 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:07,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:07" (3/3) ... [2019-10-22 09:02:07,339 INFO L371 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2019-10-22 09:02:07,389 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:02:07,389 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:02:07,389 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:02:07,389 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:07,396 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:07,396 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:02:07,396 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:07,396 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:02:07,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-10-22 09:02:07,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:07,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:07,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:07,479 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:02:07,479 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:07,479 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:02:07,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-10-22 09:02:07,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:07,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:07,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:07,483 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:02:07,483 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:07,491 INFO L791 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 8#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2019-10-22 09:02:07,491 INFO L793 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 11#L13true assume ~m < 0; 9#L14true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2019-10-22 09:02:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2019-10-22 09:02:07,506 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810383428] [2019-10-22 09:02:07,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:07,621 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash 29915, now seen corresponding path program 1 times [2019-10-22 09:02:07,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510899635] [2019-10-22 09:02:07,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:07,638 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1527789780, now seen corresponding path program 1 times [2019-10-22 09:02:07,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848778080] [2019-10-22 09:02:07,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:07,666 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:07,773 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:07,773 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:07,774 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:07,774 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:07,774 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:07,774 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:07,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:07,775 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2019-10-22 09:02:07,775 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:07,775 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:07,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:07,872 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:07,873 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:07,893 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:07,893 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:07,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,903 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 [2019-10-22 09:02:07,908 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:07,909 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:07,921 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:07,922 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:07,929 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:07,929 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:07,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:07,939 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:07,960 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:07,960 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:07,965 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:07,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:07,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:08,025 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:08,027 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:08,027 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:08,027 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:08,027 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:08,027 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:08,027 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:08,027 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:08,028 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:08,028 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2019-10-22 09:02:08,028 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:08,028 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:08,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,115 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:08,119 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:08,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,124 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,125 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,125 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,126 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,126 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,128 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,129 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,133 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:08,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,135 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,136 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,136 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,136 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,137 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,137 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,139 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,143 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:08,146 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,147 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,147 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,147 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,147 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,147 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,148 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,148 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,149 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:08,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,150 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,150 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,150 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,151 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,151 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,151 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,151 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,156 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:08,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,159 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,160 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,160 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,160 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,160 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,161 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,162 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,163 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:08,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,165 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,165 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,165 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,165 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,165 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,167 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,167 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,168 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:08,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:08,169 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:08,170 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:08,170 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:08,170 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:08,170 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:08,171 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:08,171 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:08,176 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:08,180 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 09:02:08,180 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:08,182 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:08,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:08,182 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:08,183 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-10-22 09:02:08,186 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:08,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:02:08,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:08,287 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 09:02:08,288 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2019-10-22 09:02:08,426 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 46 states and 59 transitions. Complement of second has 12 states. [2019-10-22 09:02:08,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 09:02:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-10-22 09:02:08,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 09:02:08,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:08,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2019-10-22 09:02:08,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:08,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2019-10-22 09:02:08,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:08,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2019-10-22 09:02:08,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:08,453 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 24 transitions. [2019-10-22 09:02:08,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-10-22 09:02:08,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-10-22 09:02:08,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2019-10-22 09:02:08,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:08,458 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-10-22 09:02:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2019-10-22 09:02:08,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2019-10-22 09:02:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 09:02:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-10-22 09:02:08,486 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-10-22 09:02:08,486 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-10-22 09:02:08,486 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:02:08,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2019-10-22 09:02:08,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:08,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:08,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:08,488 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:08,488 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 09:02:08,488 INFO L791 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 126#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 120#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 119#multENTRY ~n := #in~n;~m := #in~m; 122#L13 assume !(~m < 0); 127#L16 [2019-10-22 09:02:08,488 INFO L793 eck$LassoCheckResult]: Loop: 127#L16 assume !(0 == ~m); 128#L19 call #t~ret1 := mult(~n, ~m - 1);< 131#multENTRY ~n := #in~n;~m := #in~m; 132#L13 assume !(~m < 0); 127#L16 [2019-10-22 09:02:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1336189782, now seen corresponding path program 1 times [2019-10-22 09:02:08,489 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551465188] [2019-10-22 09:02:08,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:08,505 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1253150, now seen corresponding path program 1 times [2019-10-22 09:02:08,506 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812741045] [2019-10-22 09:02:08,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:08,518 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,519 INFO L82 PathProgramCache]: Analyzing trace with hash -614723597, now seen corresponding path program 1 times [2019-10-22 09:02:08,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668894701] [2019-10-22 09:02:08,519 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,524 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:08,546 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:08,627 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:08,628 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:08,628 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:08,628 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:08,628 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:08,628 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:08,628 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:08,628 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:08,628 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2019-10-22 09:02:08,629 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:08,629 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:08,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:08,726 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:08,726 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:08,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:08,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:08,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:08,741 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:08,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:08,753 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:08,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:08,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:08,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:08,767 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:08,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:08,771 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:08,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:08,782 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:08,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:08,789 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0, mult_#in~n=0} Honda state: {mult_~n=0, mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:08,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:08,796 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:08,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:08,812 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:10,022 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:10,024 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:10,024 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:10,024 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:10,024 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:10,024 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:10,024 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:10,024 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:10,024 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:10,024 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2019-10-22 09:02:10,025 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:10,025 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:10,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,109 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:10,109 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:10,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:10,111 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:10,111 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:10,111 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:10,111 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:10,112 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:10,112 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:10,112 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:10,119 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:10,123 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:10,123 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:10,123 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:10,123 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:10,124 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:10,124 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2019-10-22 09:02:10,124 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:10,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:10,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:10,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:02:10,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:10,188 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 09:02:10,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-10-22 09:02:10,226 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 26 states and 31 transitions. Complement of second has 13 states. [2019-10-22 09:02:10,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-10-22 09:02:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:02:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-10-22 09:02:10,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2019-10-22 09:02:10,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:10,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2019-10-22 09:02:10,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:10,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2019-10-22 09:02:10,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:10,229 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2019-10-22 09:02:10,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:10,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2019-10-22 09:02:10,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-10-22 09:02:10,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-10-22 09:02:10,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2019-10-22 09:02:10,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:10,232 INFO L688 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2019-10-22 09:02:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2019-10-22 09:02:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-10-22 09:02:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 09:02:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-10-22 09:02:10,235 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-10-22 09:02:10,235 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-10-22 09:02:10,235 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:02:10,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2019-10-22 09:02:10,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:10,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:10,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:10,237 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:10,237 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:10,237 INFO L791 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 228#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 229#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 235#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 236#multENTRY ~n := #in~n;~m := #in~m; 241#L13 assume !(~m < 0); 243#L16 assume !(0 == ~m); 223#L19 call #t~ret1 := mult(~n, ~m - 1);< 222#multENTRY ~n := #in~n;~m := #in~m; 224#L13 assume ~m < 0; 232#L14 [2019-10-22 09:02:10,237 INFO L793 eck$LassoCheckResult]: Loop: 232#L14 call #t~ret0 := mult(~n, -~m);< 237#multENTRY ~n := #in~n;~m := #in~m; 242#L13 assume ~m < 0; 232#L14 [2019-10-22 09:02:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:10,237 INFO L82 PathProgramCache]: Analyzing trace with hash -614723600, now seen corresponding path program 1 times [2019-10-22 09:02:10,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:10,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057045702] [2019-10-22 09:02:10,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:10,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057045702] [2019-10-22 09:02:10,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:10,289 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:10,289 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842250969] [2019-10-22 09:02:10,291 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:10,291 INFO L82 PathProgramCache]: Analyzing trace with hash 59585, now seen corresponding path program 2 times [2019-10-22 09:02:10,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:10,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792150421] [2019-10-22 09:02:10,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:10,299 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:10,348 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:10,349 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:10,349 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:10,349 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:10,349 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:10,349 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:10,349 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:10,349 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:10,349 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2019-10-22 09:02:10,349 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:10,350 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:10,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:10,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:10,424 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:10,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:10,427 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_719c4cbf-dd12-4391-aba4-ce5f3f028105/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:10,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:10,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:11,389 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:11,391 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:11,391 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:11,391 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:11,392 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:11,392 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:11,392 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:11,392 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:11,392 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:11,392 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2019-10-22 09:02:11,392 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:11,392 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:11,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:11,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:11,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:11,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:11,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:11,453 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:11,453 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:11,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:11,454 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:11,454 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:11,454 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:11,454 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:11,455 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:11,455 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:11,455 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:11,463 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:11,466 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 09:02:11,466 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:11,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:11,467 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:11,467 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:11,467 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2019-10-22 09:02:11,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:11,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:02:11,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:11,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:02:11,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:11,526 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 09:02:11,526 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-10-22 09:02:11,554 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 51 states and 61 transitions. Complement of second has 9 states. [2019-10-22 09:02:11,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 09:02:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-10-22 09:02:11,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2019-10-22 09:02:11,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:11,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2019-10-22 09:02:11,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:11,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2019-10-22 09:02:11,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:11,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2019-10-22 09:02:11,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:11,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 44 states and 54 transitions. [2019-10-22 09:02:11,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-10-22 09:02:11,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-10-22 09:02:11,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2019-10-22 09:02:11,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:11,563 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2019-10-22 09:02:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2019-10-22 09:02:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2019-10-22 09:02:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-22 09:02:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2019-10-22 09:02:11,566 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2019-10-22 09:02:11,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:11,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:11,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:11,569 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 5 states. [2019-10-22 09:02:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:11,609 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-22 09:02:11,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:11,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2019-10-22 09:02:11,612 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:11,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-10-22 09:02:11,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:02:11,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:02:11,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:02:11,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:11,613 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:11,613 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:11,613 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:11,613 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:02:11,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:11,614 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:11,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:02:11,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:02:11 BoogieIcfgContainer [2019-10-22 09:02:11,619 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:02:11,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:11,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:11,619 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:11,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:07" (3/4) ... [2019-10-22 09:02:11,623 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:11,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:11,625 INFO L168 Benchmark]: Toolchain (without parser) took 4850.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 948.5 MB in the beginning and 813.7 MB in the end (delta: 134.8 MB). Peak memory consumption was 262.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,625 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:11,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -173.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:11,627 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:11,627 INFO L168 Benchmark]: RCFGBuilder took 245.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,628 INFO L168 Benchmark]: BuchiAutomizer took 4289.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 813.7 MB in the end (delta: 288.1 MB). Peak memory consumption was 288.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,628 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 1.2 GB. Free memory is still 813.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:11,630 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -173.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 245.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4289.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 813.7 MB in the end (delta: 288.1 MB). Peak memory consumption was 288.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.31 ms. Allocated memory is still 1.2 GB. Free memory is still 813.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 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 m and consists of 5 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 42 SDtfs, 46 SDslu, 13 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf92 smp100 dnf100 smp100 tf110 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...