./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3df7720ba3b76dcfdecddff77e2f89a40d99e447 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 11:14:36,174 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:14:36,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:14:36,181 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:14:36,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:14:36,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:14:36,183 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:14:36,183 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:14:36,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:14:36,184 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:14:36,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:14:36,185 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:14:36,185 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:14:36,186 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:14:36,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:14:36,187 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:14:36,187 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:14:36,188 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:14:36,189 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:14:36,190 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:14:36,190 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:14:36,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:14:36,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:14:36,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:14:36,192 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:14:36,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:14:36,193 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:14:36,194 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:14:36,194 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:14:36,195 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:14:36,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:14:36,195 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:14:36,195 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:14:36,195 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:14:36,196 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:14:36,196 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:14:36,196 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 11:14:36,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:14:36,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:14:36,205 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 11:14:36,205 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 11:14:36,205 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 11:14:36,205 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 11:14:36,206 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 11:14:36,206 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 11:14:36,207 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 11:14:36,207 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 11:14:36,207 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 11:14:36,208 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 11:14:36,208 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2018-12-09 11:14:36,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:14:36,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:14:36,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:14:36,239 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:14:36,239 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:14:36,240 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c [2018-12-09 11:14:36,278 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/data/907e73834/9d07db5bc4fa4f8ba467ef8f2ade555c/FLAGdcc9f2f1d [2018-12-09 11:14:36,704 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:14:36,704 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c [2018-12-09 11:14:36,708 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/data/907e73834/9d07db5bc4fa4f8ba467ef8f2ade555c/FLAGdcc9f2f1d [2018-12-09 11:14:36,716 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/data/907e73834/9d07db5bc4fa4f8ba467ef8f2ade555c [2018-12-09 11:14:36,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:14:36,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:14:36,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:14:36,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:14:36,721 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:14:36,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4888228d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36, skipping insertion in model container [2018-12-09 11:14:36,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:14:36,735 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:14:36,814 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:14:36,817 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:14:36,825 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:14:36,833 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:14:36,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36 WrapperNode [2018-12-09 11:14:36,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:14:36,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:14:36,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:14:36,834 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:14:36,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:14:36,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:14:36,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:14:36,852 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:14:36,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... [2018-12-09 11:14:36,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:14:36,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:14:36,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:14:36,862 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:14:36,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2018-12-09 11:14:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2018-12-09 11:14:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:14:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:14:37,003 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:14:37,003 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 11:14:37,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:14:37 BoogieIcfgContainer [2018-12-09 11:14:37,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:14:37,004 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 11:14:37,004 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 11:14:37,006 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 11:14:37,007 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 11:14:37,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 11:14:36" (1/3) ... [2018-12-09 11:14:37,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11da7f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 11:14:37, skipping insertion in model container [2018-12-09 11:14:37,007 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 11:14:37,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:14:36" (2/3) ... [2018-12-09 11:14:37,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11da7f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 11:14:37, skipping insertion in model container [2018-12-09 11:14:37,008 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 11:14:37,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:14:37" (3/3) ... [2018-12-09 11:14:37,009 INFO L375 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication_true-termination_true-valid-memsafety.c [2018-12-09 11:14:37,042 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 11:14:37,042 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 11:14:37,042 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 11:14:37,042 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 11:14:37,042 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:14:37,043 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:14:37,043 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 11:14:37,043 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:14:37,043 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 11:14:37,054 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-09 11:14:37,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:37,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 11:14:37,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 11:14:37,081 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-09 11:14:37,081 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 11:14:37,081 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 11:14:37,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-09 11:14:37,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:37,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 11:14:37,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 11:14:37,083 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-09 11:14:37,083 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 11:14:37,088 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 8#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2018-12-09 11:14:37,089 INFO L796 eck$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 [2018-12-09 11:14:37,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2018-12-09 11:14:37,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:37,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:37,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:37,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,159 INFO L82 PathProgramCache]: Analyzing trace with hash 29915, now seen corresponding path program 1 times [2018-12-09 11:14:37,159 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:37,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:37,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:37,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1527789780, now seen corresponding path program 1 times [2018-12-09 11:14:37,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:37,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:37,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:37,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,242 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 11:14:37,243 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 11:14:37,243 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 11:14:37,243 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 11:14:37,243 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 11:14:37,243 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,243 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 11:14:37,243 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 11:14:37,243 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-09 11:14:37,244 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 11:14:37,244 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 11:14:37,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,327 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 11:14:37,327 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,331 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,331 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,336 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,336 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,353 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,353 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,367 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,368 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,369 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,370 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,386 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,386 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,401 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,401 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,403 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,403 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,418 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,418 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,420 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,420 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,434 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,435 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,451 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 11:14:37,451 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,472 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 11:14:37,473 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 11:14:37,473 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 11:14:37,473 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 11:14:37,473 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 11:14:37,473 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 11:14:37,473 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,473 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 11:14:37,473 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 11:14:37,473 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-09 11:14:37,474 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 11:14:37,474 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 11:14:37,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,515 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 11:14:37,519 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 11:14:37,520 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,520 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,521 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,521 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,521 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,521 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,522 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,522 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,525 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 11:14:37,525 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,525 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,525 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,526 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,526 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,526 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,526 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,526 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,527 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 11:14:37,527 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,528 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,528 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,528 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,528 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,528 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,528 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,528 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,529 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 11:14:37,529 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,530 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,530 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,530 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,530 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,530 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,531 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,531 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,531 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 11:14:37,532 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,532 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,532 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,532 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,532 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,532 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,533 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,533 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,534 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 11:14:37,534 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,534 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,534 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,534 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,534 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,535 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,535 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,535 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,536 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 11:14:37,536 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:37,537 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:37,537 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:37,537 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:37,537 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:37,537 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:37,537 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:37,537 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:37,540 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 11:14:37,542 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-12-09 11:14:37,543 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 11:14:37,544 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 11:14:37,544 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 11:14:37,544 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 11:14:37,544 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-12-09 11:14:37,545 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 11:14:37,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:37,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:14:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:37,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:14:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:14:37,612 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 11:14:37,613 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2018-12-09 11:14:37,672 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. [2018-12-09 11:14:37,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 11:14:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 11:14:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-09 11:14:37,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2018-12-09 11:14:37,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:37,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-09 11:14:37,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:37,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2018-12-09 11:14:37,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:37,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2018-12-09 11:14:37,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:37,682 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 24 transitions. [2018-12-09 11:14:37,682 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-12-09 11:14:37,683 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-09 11:14:37,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2018-12-09 11:14:37,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 11:14:37,683 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-12-09 11:14:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2018-12-09 11:14:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2018-12-09 11:14:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 11:14:37,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-12-09 11:14:37,699 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-12-09 11:14:37,699 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-12-09 11:14:37,699 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 11:14:37,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2018-12-09 11:14:37,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:37,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 11:14:37,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 11:14:37,700 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-09 11:14:37,700 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-09 11:14:37,700 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 126#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 120#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 119#multENTRY ~n := #in~n;~m := #in~m; 122#L13 assume !(~m < 0); 127#L16 [2018-12-09 11:14:37,700 INFO L796 eck$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 [2018-12-09 11:14:37,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1336189782, now seen corresponding path program 1 times [2018-12-09 11:14:37,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:37,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:37,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:37,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1253150, now seen corresponding path program 1 times [2018-12-09 11:14:37,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:37,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:37,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:37,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:37,713 INFO L82 PathProgramCache]: Analyzing trace with hash -614723597, now seen corresponding path program 1 times [2018-12-09 11:14:37,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:37,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:37,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:37,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:37,771 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 11:14:37,771 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 11:14:37,771 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 11:14:37,771 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 11:14:37,771 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 11:14:37,771 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,771 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 11:14:37,771 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 11:14:37,772 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-12-09 11:14:37,772 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 11:14:37,772 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 11:14:37,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:37,811 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 11:14:37,811 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,812 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,813 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,815 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,815 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,830 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,830 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,831 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,832 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,846 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,846 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,848 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,848 INFO L448 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_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,870 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,870 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:37,873 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 11:14:37,874 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=4, mult_#in~n=4} Honda state: {mult_~n=4, mult_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:37,888 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:37,907 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 11:14:37,907 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:38,707 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 11:14:38,708 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 11:14:38,708 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 11:14:38,708 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 11:14:38,708 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 11:14:38,708 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 11:14:38,709 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:38,709 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 11:14:38,709 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 11:14:38,709 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-12-09 11:14:38,709 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 11:14:38,709 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 11:14:38,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,756 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 11:14:38,756 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 11:14:38,756 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:38,757 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:38,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:38,757 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:38,757 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:38,757 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:38,758 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:38,758 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:38,762 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 11:14:38,763 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 11:14:38,764 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 11:14:38,764 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 11:14:38,764 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 11:14:38,764 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 11:14:38,764 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2018-12-09 11:14:38,764 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 11:14:38,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:38,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:14:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:38,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:14:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:14:38,802 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 11:14:38,802 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-12-09 11:14:38,825 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. [2018-12-09 11:14:38,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-09 11:14:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-09 11:14:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-12-09 11:14:38,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-09 11:14:38,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:38,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2018-12-09 11:14:38,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:38,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2018-12-09 11:14:38,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:38,826 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2018-12-09 11:14:38,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:38,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2018-12-09 11:14:38,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-12-09 11:14:38,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-12-09 11:14:38,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2018-12-09 11:14:38,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 11:14:38,828 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-12-09 11:14:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2018-12-09 11:14:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-12-09 11:14:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 11:14:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2018-12-09 11:14:38,830 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2018-12-09 11:14:38,830 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2018-12-09 11:14:38,830 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 11:14:38,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2018-12-09 11:14:38,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:38,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 11:14:38,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 11:14:38,831 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:14:38,831 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 11:14:38,831 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 228#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 229#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 235#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 236#multENTRY ~n := #in~n;~m := #in~m; 241#L13 assume !(~m < 0); 243#L16 assume !(0 == ~m); 223#L19 call #t~ret1 := mult(~n, ~m - 1);< 222#multENTRY ~n := #in~n;~m := #in~m; 224#L13 assume ~m < 0; 232#L14 [2018-12-09 11:14:38,831 INFO L796 eck$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 [2018-12-09 11:14:38,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash -614723600, now seen corresponding path program 1 times [2018-12-09 11:14:38,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:38,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:38,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:38,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:38,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:14:38,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:14:38,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:14:38,865 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 11:14:38,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:38,866 INFO L82 PathProgramCache]: Analyzing trace with hash 59585, now seen corresponding path program 2 times [2018-12-09 11:14:38,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:14:38,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:14:38,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:38,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:14:38,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:14:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:14:38,900 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 11:14:38,900 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 11:14:38,900 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 11:14:38,900 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 11:14:38,900 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 11:14:38,900 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:38,900 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 11:14:38,900 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 11:14:38,900 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-09 11:14:38,900 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 11:14:38,900 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 11:14:38,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:38,942 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 11:14:38,942 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:38,944 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 11:14:38,944 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a7d5604-817a-48dd-a580-d35bf29407e1/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:38,962 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 11:14:38,963 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 11:14:39,837 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 11:14:39,839 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 11:14:39,839 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 11:14:39,839 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 11:14:39,839 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 11:14:39,839 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 11:14:39,839 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 11:14:39,840 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 11:14:39,840 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 11:14:39,840 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-09 11:14:39,840 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 11:14:39,840 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 11:14:39,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:39,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:39,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:39,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:39,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 11:14:39,879 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 11:14:39,879 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 11:14:39,879 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 11:14:39,880 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 11:14:39,880 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 11:14:39,880 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 11:14:39,880 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 11:14:39,880 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 11:14:39,880 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 11:14:39,880 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 11:14:39,883 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 11:14:39,884 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-12-09 11:14:39,885 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 11:14:39,885 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 11:14:39,885 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 11:14:39,885 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 11:14:39,885 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2018-12-09 11:14:39,885 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 11:14:39,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:14:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:39,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:14:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:14:39,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:14:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:14:39,935 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 11:14:39,935 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-09 11:14:39,953 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. [2018-12-09 11:14:39,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 11:14:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 11:14:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-09 11:14:39,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2018-12-09 11:14:39,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:39,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2018-12-09 11:14:39,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:39,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2018-12-09 11:14:39,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 11:14:39,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2018-12-09 11:14:39,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 11:14:39,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 44 states and 54 transitions. [2018-12-09 11:14:39,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-12-09 11:14:39,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-12-09 11:14:39,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2018-12-09 11:14:39,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 11:14:39,956 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-12-09 11:14:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2018-12-09 11:14:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-09 11:14:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 11:14:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2018-12-09 11:14:39,958 INFO L728 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2018-12-09 11:14:39,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:14:39,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:14:39,961 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 5 states. [2018-12-09 11:14:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:14:39,980 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-12-09 11:14:39,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:14:39,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2018-12-09 11:14:39,981 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 11:14:39,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2018-12-09 11:14:39,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 11:14:39,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 11:14:39,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 11:14:39,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 11:14:39,981 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:14:39,981 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:14:39,981 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:14:39,981 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 11:14:39,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:14:39,981 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 11:14:39,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 11:14:39,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 11:14:39 BoogieIcfgContainer [2018-12-09 11:14:39,985 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 11:14:39,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:14:39,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:14:39,986 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:14:39,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:14:37" (3/4) ... [2018-12-09 11:14:39,988 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 11:14:39,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:14:39,988 INFO L168 Benchmark]: Toolchain (without parser) took 3270.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -97.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:14:39,989 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:14:39,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.60 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:14:39,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.32 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:14:39,990 INFO L168 Benchmark]: Boogie Preprocessor took 9.63 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:14:39,990 INFO L168 Benchmark]: RCFGBuilder took 141.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -129.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:14:39,991 INFO L168 Benchmark]: BuchiAutomizer took 2981.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:14:39,991 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:14:39,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.60 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.32 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.63 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 141.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -129.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2981.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. 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 2.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 5ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...