./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-20 07:06:17,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:06:17,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:06:17,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:06:17,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:06:17,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:06:17,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:06:17,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:06:17,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:06:17,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:06:17,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:06:17,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:06:17,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:06:17,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:06:17,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:06:17,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:06:17,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:06:17,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:06:17,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:06:17,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:06:17,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:06:17,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:06:17,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:06:17,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:06:17,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:06:17,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:06:17,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:06:17,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:06:17,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:06:17,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:06:17,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:06:17,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:06:17,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:06:17,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:06:17,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:06:17,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:06:17,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:06:17,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:06:17,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:06:17,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:06:17,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:06:17,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:06:17,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:06:17,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:06:17,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:06:17,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:06:17,819 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:06:17,819 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:06:17,820 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:06:17,820 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:06:17,820 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:06:17,820 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:06:17,821 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:06:17,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:06:17,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:06:17,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:06:17,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:06:17,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:06:17,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:06:17,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:06:17,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:06:17,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:06:17,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:06:17,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:06:17,824 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:06:17,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:06:17,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:06:17,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:06:17,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:06:17,825 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:06:17,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:06:17,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:06:17,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:06:17,826 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:06:17,827 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:06:17,828 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 [2020-10-20 07:06:18,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:06:18,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:06:18,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:06:18,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:06:18,073 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:06:18,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2020-10-20 07:06:18,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bda3b75/ac08345932b342a1bd24eee18c677542/FLAG9d0208ba3 [2020-10-20 07:06:18,668 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:06:18,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2020-10-20 07:06:18,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bda3b75/ac08345932b342a1bd24eee18c677542/FLAG9d0208ba3 [2020-10-20 07:06:19,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bda3b75/ac08345932b342a1bd24eee18c677542 [2020-10-20 07:06:19,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:06:19,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:06:19,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:19,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:06:19,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:06:19,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d99696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19, skipping insertion in model container [2020-10-20 07:06:19,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:06:19,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:06:19,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:19,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:06:19,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:19,361 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:06:19,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19 WrapperNode [2020-10-20 07:06:19,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:19,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:19,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:06:19,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:06:19,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:19,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:06:19,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:06:19,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:06:19,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (1/1) ... [2020-10-20 07:06:19,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:06:19,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:06:19,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:06:19,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:06:19,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (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 [2020-10-20 07:06:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:06:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:06:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:06:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:06:19,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:06:19,773 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 07:06:19,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:19 BoogieIcfgContainer [2020-10-20 07:06:19,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:06:19,776 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:06:19,776 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:06:19,780 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:06:19,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:19,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:06:19" (1/3) ... [2020-10-20 07:06:19,782 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a7ecac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:19, skipping insertion in model container [2020-10-20 07:06:19,782 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:19,783 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:19" (2/3) ... [2020-10-20 07:06:19,783 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a7ecac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:19, skipping insertion in model container [2020-10-20 07:06:19,783 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:19,783 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:19" (3/3) ... [2020-10-20 07:06:19,785 INFO L373 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2020-10-20 07:06:19,857 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:06:19,857 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:06:19,858 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:06:19,858 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:06:19,861 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:06:19,861 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:06:19,862 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:06:19,862 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:06:19,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 07:06:19,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 07:06:19,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:19,925 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:19,933 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:06:19,933 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:19,934 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:06:19,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 07:06:19,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 07:06:19,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:19,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:19,938 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:06:19,938 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:19,947 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 13#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 4#L28true assume !!(main_~l~0 > 0); 7#L29true assume !!(main_~l~0 < 1000000); 11#L30true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 5#L31-3true [2020-10-20 07:06:19,948 INFO L796 eck$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 [2020-10-20 07:06:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2020-10-20 07:06:19,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:19,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57168238] [2020-10-20 07:06:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,098 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:20,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1721057, now seen corresponding path program 1 times [2020-10-20 07:06:20,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:20,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474730758] [2020-10-20 07:06:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:20,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474730758] [2020-10-20 07:06:20,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:20,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 07:06:20,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439590771] [2020-10-20 07:06:20,162 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 07:06:20,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 07:06:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 07:06:20,183 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-10-20 07:06:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:20,190 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-10-20 07:06:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:20,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2020-10-20 07:06:20,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 07:06:20,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 11 states and 13 transitions. [2020-10-20 07:06:20,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 07:06:20,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 07:06:20,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-10-20 07:06:20,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:20,201 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-20 07:06:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-10-20 07:06:20,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 07:06:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 07:06:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-20 07:06:20,245 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-20 07:06:20,245 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-20 07:06:20,245 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:06:20,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2020-10-20 07:06:20,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 07:06:20,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:20,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:20,247 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:06:20,247 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:20,247 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 [2020-10-20 07:06:20,247 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 [2020-10-20 07:06:20,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:20,248 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2020-10-20 07:06:20,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:20,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024053489] [2020-10-20 07:06:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,278 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:20,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1699915, now seen corresponding path program 1 times [2020-10-20 07:06:20,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:20,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551060188] [2020-10-20 07:06:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,295 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1271724403, now seen corresponding path program 1 times [2020-10-20 07:06:20,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:20,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372579515] [2020-10-20 07:06:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:20,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:20,341 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:20,402 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:20,403 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:20,403 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:20,403 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:20,403 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:20,403 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:20,403 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:20,404 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:20,404 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-10-20 07:06:20,404 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:20,404 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:20,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:20,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:20,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:20,564 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:20,565 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) [2020-10-20 07:06:20,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:20,579 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 [2020-10-20 07:06:20,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:20,589 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:20,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:20,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:20,623 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:20,623 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:20,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:20,655 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 07:06:20,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:20,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:21,032 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:21,034 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:21,035 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:21,035 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:21,035 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:21,035 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:21,035 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,035 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:21,035 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:21,036 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-10-20 07:06:21,036 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:21,036 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:21,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,130 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:21,136 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 07:06:21,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:21,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:21,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:21,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:21,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:21,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:21,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:21,160 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) [2020-10-20 07:06:21,199 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 [2020-10-20 07:06:21,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:21,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:21,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:21,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:21,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:21,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:21,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:21,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:21,222 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:21,223 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:21,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:21,265 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:21,265 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 [] [2020-10-20 07:06:21,305 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:21,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:21,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:21,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:21,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:21,385 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 [2020-10-20 07:06:21,386 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 07:06:21,432 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. [2020-10-20 07:06:21,432 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 [2020-10-20 07:06:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-10-20 07:06:21,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 07:06:21,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:21,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 07:06:21,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:21,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-20 07:06:21,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:21,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-10-20 07:06:21,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 07:06:21,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 20 transitions. [2020-10-20 07:06:21,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-20 07:06:21,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 07:06:21,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2020-10-20 07:06:21,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:21,441 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-10-20 07:06:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2020-10-20 07:06:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-20 07:06:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 07:06:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-20 07:06:21,444 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 07:06:21,444 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 07:06:21,444 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 07:06:21,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-20 07:06:21,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 07:06:21,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:21,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:21,446 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 07:06:21,446 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:06:21,446 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 [2020-10-20 07:06:21,447 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 [2020-10-20 07:06:21,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:21,447 INFO L82 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2020-10-20 07:06:21,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:21,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106564141] [2020-10-20 07:06:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:21,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:21,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:21,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 1 times [2020-10-20 07:06:21,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:21,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45259784] [2020-10-20 07:06:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:21,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:21,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:21,523 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:21,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1271726005, now seen corresponding path program 1 times [2020-10-20 07:06:21,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:21,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575665434] [2020-10-20 07:06:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:21,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:21,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:21,586 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:21,634 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:21,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:21,635 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:21,635 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:21,635 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:21,635 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,635 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:21,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:21,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-10-20 07:06:21,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:21,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:21,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:21,715 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) [2020-10-20 07:06:21,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:21,738 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:21,744 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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:21,775 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:21,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:21,847 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:21,849 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:21,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:21,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:21,850 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:21,850 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:21,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,850 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:21,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:21,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-10-20 07:06:21,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:21,851 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:21,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:21,918 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:21,918 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) [2020-10-20 07:06:21,933 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 [2020-10-20 07:06:21,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:21,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:21,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:21,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:21,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:21,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:21,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:21,938 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) [2020-10-20 07:06:21,992 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 [2020-10-20 07:06:21,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:21,994 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:21,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:21,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:21,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:21,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:21,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:22,006 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 07:06:22,006 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 [2020-10-20 07:06:22,021 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:22,021 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:22,021 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:22,021 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 [] [2020-10-20 07:06:22,063 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:22,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:22,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:22,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:22,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:22,164 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 [2020-10-20 07:06:22,164 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-20 07:06:22,182 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. [2020-10-20 07:06:22,183 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 [2020-10-20 07:06:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-20 07:06:22,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 07:06:22,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:22,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-20 07:06:22,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:22,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-20 07:06:22,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:22,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 41 transitions. [2020-10-20 07:06:22,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 07:06:22,189 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 21 states and 27 transitions. [2020-10-20 07:06:22,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-20 07:06:22,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-20 07:06:22,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2020-10-20 07:06:22,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:22,190 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-10-20 07:06:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2020-10-20 07:06:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-10-20 07:06:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 07:06:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-10-20 07:06:22,192 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-20 07:06:22,192 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-20 07:06:22,193 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 07:06:22,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2020-10-20 07:06:22,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 07:06:22,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:22,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:22,195 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:06:22,195 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:06:22,195 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 [2020-10-20 07:06:22,195 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 [2020-10-20 07:06:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 768752776, now seen corresponding path program 1 times [2020-10-20 07:06:22,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:22,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451940559] [2020-10-20 07:06:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:22,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:22,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:22,221 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:22,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:22,222 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 2 times [2020-10-20 07:06:22,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:22,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66957406] [2020-10-20 07:06:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:22,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:22,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:22,232 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1148360765, now seen corresponding path program 1 times [2020-10-20 07:06:22,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:22,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580756933] [2020-10-20 07:06:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:22,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580756933] [2020-10-20 07:06:22,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903021116] [2020-10-20 07:06:22,280 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 [2020-10-20 07:06:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:22,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 07:06:22,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 07:06:22,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54093855] [2020-10-20 07:06:22,418 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:22,419 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:22,419 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:22,419 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:22,419 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:22,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:22,420 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:22,420 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-10-20 07:06:22,420 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:22,420 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:22,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:22,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:22,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:22,486 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:22,487 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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:22,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:22,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:22,502 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) [2020-10-20 07:06:22,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:22,543 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,554 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:22,554 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 [2020-10-20 07:06:22,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:22,601 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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:22,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:22,716 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:22,718 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:22,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:22,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:22,719 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:22,719 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:22,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:22,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:22,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-10-20 07:06:22,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:22,720 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:22,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:22,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:22,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:22,778 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:22,778 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,790 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 [2020-10-20 07:06:22,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:22,793 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:22,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:22,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:22,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:22,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:22,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:22,798 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) [2020-10-20 07:06:22,851 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 [2020-10-20 07:06:22,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:22,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:22,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:22,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:22,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:22,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:22,855 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 [2020-10-20 07:06:22,857 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) [2020-10-20 07:06:22,907 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 [2020-10-20 07:06:22,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:22,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:22,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:22,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:22,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:22,912 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:22,912 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:22,916 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:22,925 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 07:06:22,925 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) [2020-10-20 07:06:22,929 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:22,929 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:22,930 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:22,930 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 [2020-10-20 07:06:22,967 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:22,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:23,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:23,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:23,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:23,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:23,067 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 [2020-10-20 07:06:23,067 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 07:06:23,086 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. [2020-10-20 07:06:23,086 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 [2020-10-20 07:06:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-20 07:06:23,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 07:06:23,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:23,088 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 07:06:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:23,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:23,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:23,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:23,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:23,134 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 [2020-10-20 07:06:23,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 07:06:23,151 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. [2020-10-20 07:06:23,151 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 [2020-10-20 07:06:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-20 07:06:23,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 07:06:23,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:23,153 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 07:06:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:23,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:23,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:23,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:23,219 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 [2020-10-20 07:06:23,219 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 07:06:23,236 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. [2020-10-20 07:06:23,237 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 [2020-10-20 07:06:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-20 07:06:23,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 07:06:23,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:23,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 07:06:23,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:23,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 07:06:23,239 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:23,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-10-20 07:06:23,240 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:23,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-10-20 07:06:23,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:23,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:23,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:23,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:23,241 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:23,241 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:23,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:23,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 07:06:23,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 07:06:23,242 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-20 07:06:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:23,242 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 07:06:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:23,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 07:06:23,243 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:23,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 07:06:23,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:23,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:23,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:23,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:23,243 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:23,243 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:23,244 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:23,244 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 07:06:23,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 07:06:23,244 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:23,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 07:06:23,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:06:23 BoogieIcfgContainer [2020-10-20 07:06:23,251 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:06:23,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:06:23,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:06:23,252 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:06:23,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:19" (3/4) ... [2020-10-20 07:06:23,256 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 07:06:23,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:06:23,259 INFO L168 Benchmark]: Toolchain (without parser) took 4182.70 ms. Allocated memory was 39.8 MB in the beginning and 52.4 MB in the end (delta: 12.6 MB). Free memory was 17.3 MB in the beginning and 28.3 MB in the end (delta: -10.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:23,260 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 16.9 MB in the beginning and 16.8 MB in the end (delta: 30.9 kB). Peak memory consumption was 30.9 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:23,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.72 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.5 MB in the beginning and 16.6 MB in the end (delta: -150.0 kB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:23,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.28 ms. Allocated memory is still 40.9 MB. Free memory was 16.5 MB in the beginning and 14.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:23,262 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 40.9 MB. Free memory was 14.9 MB in the beginning and 13.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:23,263 INFO L168 Benchmark]: RCFGBuilder took 343.96 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.5 MB in the beginning and 15.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:23,263 INFO L168 Benchmark]: BuchiAutomizer took 3475.49 ms. Allocated memory was 42.5 MB in the beginning and 52.4 MB in the end (delta: 10.0 MB). Free memory was 15.4 MB in the beginning and 28.3 MB in the end (delta: -12.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 07:06:23,264 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 52.4 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 07:06:23,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 16.9 MB in the beginning and 16.8 MB in the end (delta: 30.9 kB). Peak memory consumption was 30.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 280.72 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.5 MB in the beginning and 16.6 MB in the end (delta: -150.0 kB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.28 ms. Allocated memory is still 40.9 MB. Free memory was 16.5 MB in the beginning and 14.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 40.9 MB. Free memory was 14.9 MB in the beginning and 13.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 343.96 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 13.5 MB in the beginning and 15.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3475.49 ms. Allocated memory was 42.5 MB in the beginning and 52.4 MB in the end (delta: 10.0 MB). Free memory was 15.4 MB in the beginning and 28.3 MB in the end (delta: -12.9 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.74 ms. Allocated memory is still 52.4 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 14.3 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 3.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. 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: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...