./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/nest-if3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6ea3567a534d80cc2c4496700797b4364bacf8f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:49:48,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:49:48,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:49:48,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:49:48,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:49:48,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:49:48,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:49:48,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:49:48,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:49:48,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:49:48,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:49:48,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:49:48,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:49:48,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:49:48,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:49:48,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:49:48,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:49:48,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:49:48,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:49:48,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:49:48,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:49:48,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:49:48,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:49:48,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:49:48,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:49:48,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:49:48,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:49:48,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:49:48,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:49:48,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:49:48,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:49:48,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:49:48,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:49:48,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:49:48,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:49:48,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:49:48,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:49:48,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:49:48,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:49:48,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:49:48,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:49:48,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 04:49:48,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:49:48,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:49:48,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:49:48,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:49:48,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:49:48,225 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:49:48,226 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:49:48,226 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:49:48,226 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:49:48,226 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:49:48,227 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:49:48,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:49:48,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 04:49:48,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:49:48,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:49:48,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 04:49:48,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:49:48,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:49:48,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:49:48,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:49:48,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 04:49:48,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:49:48,230 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:49:48,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:49:48,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:49:48,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:49:48,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:49:48,231 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:49:48,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:49:48,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:49:48,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:49:48,232 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:49:48,234 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:49:48,234 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6ea3567a534d80cc2c4496700797b4364bacf8f [2020-10-26 04:49:48,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:49:48,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:49:48,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:49:48,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:49:48,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:49:48,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2020-10-26 04:49:48,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5d99643/944ab4f123c7401caedd8c6eefdb85cf/FLAGa638678e5 [2020-10-26 04:49:49,467 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:49:49,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2020-10-26 04:49:49,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5d99643/944ab4f123c7401caedd8c6eefdb85cf/FLAGa638678e5 [2020-10-26 04:49:49,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5d99643/944ab4f123c7401caedd8c6eefdb85cf [2020-10-26 04:49:49,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:49:49,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:49:49,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:49:49,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:49:49,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:49:49,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:49:49" (1/1) ... [2020-10-26 04:49:49,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c0ea1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:49, skipping insertion in model container [2020-10-26 04:49:49,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:49:49" (1/1) ... [2020-10-26 04:49:49,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:49:49,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:49:50,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:49:50,059 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:49:50,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:49:50,108 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:49:50,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50 WrapperNode [2020-10-26 04:49:50,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:49:50,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:49:50,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:49:50,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:49:50,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:49:50,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:49:50,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:49:50,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:49:50,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... [2020-10-26 04:49:50,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:49:50,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:49:50,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:49:50,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:49:50,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 04:49:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:49:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:49:50,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:49:50,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:49:50,877 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 04:49:50,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:49:50 BoogieIcfgContainer [2020-10-26 04:49:50,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:49:50,881 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:49:50,881 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:49:50,886 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:49:50,887 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:49:50,887 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:49:49" (1/3) ... [2020-10-26 04:49:50,889 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65ed4e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:49:50, skipping insertion in model container [2020-10-26 04:49:50,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:49:50,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:49:50" (2/3) ... [2020-10-26 04:49:50,890 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65ed4e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:49:50, skipping insertion in model container [2020-10-26 04:49:50,890 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:49:50,890 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:49:50" (3/3) ... [2020-10-26 04:49:50,893 INFO L373 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2020-10-26 04:49:50,975 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:49:50,976 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:49:50,976 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:49:50,976 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:49:50,976 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:49:50,976 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:49:50,977 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:49:50,977 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:49:50,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 04:49:51,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-26 04:49:51,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:49:51,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:49:51,031 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 04:49:51,031 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:49:51,031 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:49:51,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 04:49:51,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-26 04:49:51,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:49:51,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:49:51,036 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 04:49:51,037 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:49:51,051 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 13#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 4#L28true assume !!(main_~l~0 > 0); 7#L29true assume !!(main_~l~0 < 1000000); 11#L30true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 5#L31-3true [2020-10-26 04:49:51,051 INFO L796 eck$LassoCheckResult]: Loop: 5#L31-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 12#L32-2true assume !true; 8#L32-3true assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 9#L31-2true main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 5#L31-3true [2020-10-26 04:49:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2020-10-26 04:49:51,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:51,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690418303] [2020-10-26 04:49:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:51,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1721057, now seen corresponding path program 1 times [2020-10-26 04:49:51,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:51,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674377619] [2020-10-26 04:49:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:51,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674377619] [2020-10-26 04:49:51,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:49:51,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:49:51,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962017088] [2020-10-26 04:49:51,276 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:49:51,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:49:51,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 04:49:51,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 04:49:51,299 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-10-26 04:49:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:49:51,308 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-10-26 04:49:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 04:49:51,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2020-10-26 04:49:51,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 04:49:51,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 11 states and 13 transitions. [2020-10-26 04:49:51,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-26 04:49:51,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-26 04:49:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-10-26 04:49:51,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:49:51,321 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-26 04:49:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-10-26 04:49:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-26 04:49:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 04:49:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-26 04:49:51,354 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-26 04:49:51,354 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-26 04:49:51,355 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:49:51,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2020-10-26 04:49:51,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 04:49:51,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:49:51,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:49:51,357 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 04:49:51,357 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:49:51,357 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 42#L28 assume !!(main_~l~0 > 0); 47#L29 assume !!(main_~l~0 < 1000000); 51#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 46#L31-3 [2020-10-26 04:49:51,358 INFO L796 eck$LassoCheckResult]: Loop: 46#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 44#L32-2 assume !(main_~i~0 < main_~n~0); 49#L32-3 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 50#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 46#L31-3 [2020-10-26 04:49:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2020-10-26 04:49:51,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:51,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850146260] [2020-10-26 04:49:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:51,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1699915, now seen corresponding path program 1 times [2020-10-26 04:49:51,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:51,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029063788] [2020-10-26 04:49:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,412 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1271724403, now seen corresponding path program 1 times [2020-10-26 04:49:51,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:51,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311455214] [2020-10-26 04:49:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:51,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:51,467 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:51,547 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:49:51,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:49:51,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:49:51,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:49:51,548 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:49:51,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:51,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:49:51,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:49:51,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-10-26 04:49:51,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:49:51,550 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:49:51,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:51,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:51,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:51,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:49:51,711 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:51,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:51,722 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:51,734 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:49:51,735 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:51,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:51,790 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:51,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:49:51,797 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=-5} Honda state: {ULTIMATE.start_main_#t~nondet7=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:51,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:51,838 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:51,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:49:51,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:49:52,276 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:49:52,279 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:49:52,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:49:52,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:49:52,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:49:52,279 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:49:52,279 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:52,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:49:52,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:49:52,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-10-26 04:49:52,280 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:49:52,280 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:49:52,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:52,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:52,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:52,426 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:49:52,432 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:52,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:49:52,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:52,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:52,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:52,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:52,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:52,448 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:52,448 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:52,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:52,492 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:52,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:52,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:52,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:52,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:52,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:52,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:52,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:49:52,505 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:49:52,513 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:49:52,513 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:52,519 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:49:52,520 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:49:52,520 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:52,525 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2020-10-26 04:49:52,571 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:49:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:52,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:49:52,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:52,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:49:52,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:52,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:49:52,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-26 04:49:52,928 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2020-10-26 04:49:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:49:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:49:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-10-26 04:49:52,932 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 04:49:52,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:52,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-26 04:49:52,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:52,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-26 04:49:52,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:52,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-10-26 04:49:52,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:49:52,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 20 transitions. [2020-10-26 04:49:52,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-26 04:49:52,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-26 04:49:52,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2020-10-26 04:49:52,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:49:52,939 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-10-26 04:49:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2020-10-26 04:49:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-26 04:49:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-26 04:49:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-26 04:49:52,941 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-26 04:49:52,942 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-26 04:49:52,942 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:49:52,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-26 04:49:52,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:49:52,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:49:52,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:49:52,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:49:52,944 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:49:52,944 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 117#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 118#L28 assume !!(main_~l~0 > 0); 126#L29 assume !!(main_~l~0 < 1000000); 131#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 124#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 120#L32-2 [2020-10-26 04:49:52,945 INFO L796 eck$LassoCheckResult]: Loop: 120#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 127#L18 assume !(0 == __VERIFIER_assert_~cond); 119#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 120#L32-2 [2020-10-26 04:49:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:52,946 INFO L82 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2020-10-26 04:49:52,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:52,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198229500] [2020-10-26 04:49:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:52,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:52,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:52,976 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 1 times [2020-10-26 04:49:52,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:52,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74817749] [2020-10-26 04:49:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:52,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:52,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:52,995 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1271726005, now seen corresponding path program 1 times [2020-10-26 04:49:52,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:52,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919501969] [2020-10-26 04:49:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:53,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:53,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:53,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:53,125 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:49:53,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:49:53,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:49:53,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:49:53,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:49:53,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:49:53,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:49:53,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-10-26 04:49:53,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:49:53,126 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:49:53,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,212 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:49:53,213 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:53,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:49:53,221 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:49:53,221 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:53,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:53,266 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:53,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:49:53,316 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,379 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:49:53,381 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:49:53,381 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:49:53,381 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:49:53,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:49:53,382 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:49:53,382 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,382 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:49:53,382 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:49:53,382 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-10-26 04:49:53,382 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:49:53,382 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:49:53,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,470 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:49:53,470 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:53,488 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:49:53,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:53,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:53,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:53,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:53,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:53,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:53,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,532 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:49:53,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:53,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:53,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:53,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:53,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:53,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:53,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:49:53,539 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:49:53,545 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-26 04:49:53,546 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,549 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:49:53,549 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:49:53,550 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:49:53,550 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-26 04:49:53,570 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:49:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:49:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:53,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:49:53,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:53,635 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:49:53,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-26 04:49:53,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 32 states and 41 transitions. Complement of second has 7 states. [2020-10-26 04:49:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:49:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:49:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:49:53,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 04:49:53,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:53,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-26 04:49:53,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:53,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-26 04:49:53,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:53,663 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 41 transitions. [2020-10-26 04:49:53,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:49:53,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 21 states and 27 transitions. [2020-10-26 04:49:53,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-26 04:49:53,667 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-26 04:49:53,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2020-10-26 04:49:53,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:49:53,668 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-10-26 04:49:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2020-10-26 04:49:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-10-26 04:49:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-26 04:49:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-10-26 04:49:53,671 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-26 04:49:53,671 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-26 04:49:53,671 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:49:53,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2020-10-26 04:49:53,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:49:53,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:49:53,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:49:53,673 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:49:53,673 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:49:53,673 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 215#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 216#L28 assume !!(main_~l~0 > 0); 224#L29 assume !!(main_~l~0 < 1000000); 229#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 222#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 220#L32-2 assume !(main_~i~0 < main_~n~0); 227#L32-3 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7; 228#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 223#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 218#L32-2 [2020-10-26 04:49:53,674 INFO L796 eck$LassoCheckResult]: Loop: 218#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 225#L18 assume !(0 == __VERIFIER_assert_~cond); 217#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 218#L32-2 [2020-10-26 04:49:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash 768752776, now seen corresponding path program 1 times [2020-10-26 04:49:53,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:53,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387695727] [2020-10-26 04:49:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:53,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:53,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:53,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:53,728 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 2 times [2020-10-26 04:49:53,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:53,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530502983] [2020-10-26 04:49:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:53,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:49:53,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:49:53,740 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:49:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1148360765, now seen corresponding path program 1 times [2020-10-26 04:49:53,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:49:53,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238654864] [2020-10-26 04:49:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:49:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:53,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238654864] [2020-10-26 04:49:53,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427506167] [2020-10-26 04:49:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:49:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:53,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:49:53,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:53,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:49:53,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-26 04:49:53,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388236628] [2020-10-26 04:49:53,958 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:49:53,958 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:49:53,959 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:49:53,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:49:53,969 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:49:53,969 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:53,969 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:49:53,969 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:49:53,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-10-26 04:49:53,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:49:53,970 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:49:53,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:53,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:54,043 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:49:54,043 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:54,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:54,050 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,054 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:49:54,054 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:54,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:49:54,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:49:54,091 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:49:54,122 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:54,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:49:54,217 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:49:54,219 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:49:54,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:49:54,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:49:54,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:49:54,220 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:49:54,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:49:54,220 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:49:54,220 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-10-26 04:49:54,220 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:49:54,220 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:49:54,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:54,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:54,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:49:54,313 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:49:54,314 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:54,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:49:54,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:54,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:54,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:54,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:54,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:54,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:54,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:54,388 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:49:54,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:54,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:54,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:54,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:54,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:54,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:54,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:49:54,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:49:54,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:49:54,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:49:54,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:49:54,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:49:54,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:49:54,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:49:54,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:49:54,453 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-26 04:49:54,453 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:49:54,459 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:49:54,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:49:54,460 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:49:54,460 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:49:54,495 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:49:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:54,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:49:54,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:54,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:49:54,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:54,569 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:49:54,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:49:54,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-10-26 04:49:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:49:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:49:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:49:54,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:49:54,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:54,592 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:49:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:54,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:49:54,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:54,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:49:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:54,650 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:49:54,651 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:49:54,668 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-10-26 04:49:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:49:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:49:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:49:54,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:49:54,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:54,670 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:49:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:49:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:54,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:49:54,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:49:54,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:49:54,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:49:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:49:54,764 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:49:54,764 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:49:54,785 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 28 transitions. Complement of second has 6 states. [2020-10-26 04:49:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:49:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:49:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-26 04:49:54,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:49:54,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:54,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 04:49:54,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:54,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-26 04:49:54,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:49:54,788 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-10-26 04:49:54,789 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:49:54,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-10-26 04:49:54,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:49:54,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:49:54,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:49:54,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:49:54,790 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:49:54,790 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:49:54,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:49:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:49:54,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:49:54,791 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-26 04:49:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:49:54,791 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-26 04:49:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 04:49:54,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-26 04:49:54,791 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:49:54,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:49:54,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:49:54,792 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:49:54,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:49:54,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:49:54,792 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:49:54,792 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:49:54,792 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:49:54,792 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:49:54,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:49:54,792 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:49:54,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:49:54,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:49:54 BoogieIcfgContainer [2020-10-26 04:49:54,800 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:49:54,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:49:54,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:49:54,801 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:49:54,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:49:50" (3/4) ... [2020-10-26 04:49:54,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:49:54,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:49:54,808 INFO L168 Benchmark]: Toolchain (without parser) took 5005.70 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 26.3 MB in the beginning and 42.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:49:54,808 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:49:54,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.91 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 29.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:49:54,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 48.2 MB. Free memory was 29.4 MB in the beginning and 27.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:49:54,810 INFO L168 Benchmark]: Boogie Preprocessor took 56.59 ms. Allocated memory is still 48.2 MB. Free memory was 27.9 MB in the beginning and 26.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:49:54,811 INFO L168 Benchmark]: RCFGBuilder took 653.61 ms. Allocated memory is still 48.2 MB. Free memory was 26.9 MB in the beginning and 26.6 MB in the end (delta: 282.6 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:49:54,812 INFO L168 Benchmark]: BuchiAutomizer took 3918.46 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 26.4 MB in the beginning and 42.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:49:54,812 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 71.3 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:49:54,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.91 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 29.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 48.2 MB. Free memory was 29.4 MB in the beginning and 27.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.59 ms. Allocated memory is still 48.2 MB. Free memory was 27.9 MB in the beginning and 26.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 653.61 ms. Allocated memory is still 48.2 MB. Free memory was 26.9 MB in the beginning and 26.6 MB in the end (delta: 282.6 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3918.46 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 26.4 MB in the beginning and 42.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.07 ms. Allocated memory is still 71.3 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 77 SDtfs, 60 SDslu, 28 SDs, 0 SdLazy, 43 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf98 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...