./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81c3a4bcb7df13b97375e2abc10c6fdc1a8edbd3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:18:11,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:18:11,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:18:11,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:18:11,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:18:11,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:18:11,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:18:11,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:18:11,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:18:11,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:18:11,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:18:11,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:18:11,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:18:11,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:18:11,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:18:11,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:18:11,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:18:11,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:18:11,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:18:11,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:18:11,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:18:11,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:18:11,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:18:11,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:18:11,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:18:11,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:18:11,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:18:11,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:18:11,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:18:11,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:18:11,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:18:11,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:18:11,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:18:11,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:18:11,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:18:11,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:18:11,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:18:11,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:18:11,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:18:11,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:18:11,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:18:11,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:18:11,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:18:11,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:18:11,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:18:11,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:18:11,867 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:18:11,868 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:18:11,868 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:18:11,869 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:18:11,869 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:18:11,870 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:18:11,870 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:18:11,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:18:11,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:18:11,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:18:11,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:18:11,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:18:11,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:18:11,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:18:11,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:18:11,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:18:11,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:18:11,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:18:11,875 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:18:11,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:18:11,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:18:11,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:18:11,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:18:11,876 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:18:11,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:18:11,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:18:11,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:18:11,878 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:18:11,879 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:18:11,879 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81c3a4bcb7df13b97375e2abc10c6fdc1a8edbd3 [2020-11-29 19:18:12,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:18:12,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:18:12,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:18:12,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:18:12,224 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:18:12,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2020-11-29 19:18:12,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/data/002f3daec/383cb02ad288474daed74972cdf6754a/FLAGfc3bc2e59 [2020-11-29 19:18:12,911 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:18:12,913 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2020-11-29 19:18:12,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/data/002f3daec/383cb02ad288474daed74972cdf6754a/FLAGfc3bc2e59 [2020-11-29 19:18:13,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/data/002f3daec/383cb02ad288474daed74972cdf6754a [2020-11-29 19:18:13,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:18:13,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:18:13,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:18:13,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:18:13,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:18:13,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770bfa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13, skipping insertion in model container [2020-11-29 19:18:13,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:18:13,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:18:13,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:18:13,646 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:18:13,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:18:13,689 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:18:13,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13 WrapperNode [2020-11-29 19:18:13,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:18:13,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:18:13,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:18:13,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:18:13,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:18:13,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:18:13,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:18:13,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:18:13,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... [2020-11-29 19:18:13,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:18:13,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:18:13,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:18:13,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:18:13,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:18:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:18:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:18:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-29 19:18:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-29 19:18:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:18:14,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:18:14,424 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:18:14,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:18:14 BoogieIcfgContainer [2020-11-29 19:18:14,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:18:14,427 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:18:14,428 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:18:14,432 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:18:14,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:18:14,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:18:13" (1/3) ... [2020-11-29 19:18:14,435 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f07d499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:18:14, skipping insertion in model container [2020-11-29 19:18:14,436 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:18:14,436 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:18:13" (2/3) ... [2020-11-29 19:18:14,436 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f07d499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:18:14, skipping insertion in model container [2020-11-29 19:18:14,437 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:18:14,437 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:18:14" (3/3) ... [2020-11-29 19:18:14,439 INFO L373 chiAutomizerObserver]: Analyzing ICFG id_i15_o15-2.c [2020-11-29 19:18:14,497 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:18:14,497 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:18:14,497 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:18:14,497 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:18:14,498 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:18:14,498 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:18:14,498 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:18:14,498 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:18:14,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 19:18:14,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:18:14,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:18:14,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:18:14,546 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:18:14,547 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:18:14,547 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:18:14,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 19:18:14,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:18:14,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:18:14,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:18:14,551 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:18:14,551 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:18:14,560 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5#L-1true havoc main_#res;havoc main_#t~ret8, main_~input~0, main_~result~0;main_~input~0 := 15; 15#L13true call main_#t~ret8 := id(main_~input~0);< 13#idENTRYtrue [2020-11-29 19:18:14,561 INFO L796 eck$LassoCheckResult]: Loop: 13#idENTRYtrue ~x := #in~x; 10#L7true assume !(0 == ~x); 6#L8true call #t~ret7 := id(~x - 1);< 13#idENTRYtrue [2020-11-29 19:18:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-11-29 19:18:14,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:14,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191089519] [2020-11-29 19:18:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:18:14,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:18:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:18:14,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:18:14,773 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:18:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:14,776 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-11-29 19:18:14,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:14,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337042203] [2020-11-29 19:18:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:18:14,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:18:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:18:14,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:18:14,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:18:14,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:14,798 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-11-29 19:18:14,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:18:14,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643264152] [2020-11-29 19:18:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:18:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:18:14,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:18:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:18:14,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:18:14,851 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:18:15,005 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:18:15,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:18:15,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:18:15,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:18:15,007 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:18:15,007 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:15,007 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:18:15,007 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:18:15,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_i15_o15-2.c_Iteration1_Loop [2020-11-29 19:18:15,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:18:15,008 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:18:15,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:15,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:15,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:15,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:15,178 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:18:15,179 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:18:15,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:18:15,191 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 [2020-11-29 19:18:15,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:18:15,207 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#t~ret7=0} Honda state: {id_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:15,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:18:15,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:18:15,250 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:18:15,250 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#res=0} Honda state: {id_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:15,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:18:15,289 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:15,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:18:15,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:18:15,401 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:18:15,402 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#in~x=-7} Honda state: {id_#in~x=-7} Generalized eigenvectors: [{id_#in~x=0}, {id_#in~x=0}, {id_#in~x=-1}] Lambdas: [2, 0, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:18:15,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:18:15,463 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:15,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:18:15,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_~x=0} Honda state: {id_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-11-29 19:18:15,783 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-11-29 19:18:16,084 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:18:16,085 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:18:16,085 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:18:16,085 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:18:16,085 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:18:16,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:16,086 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:18:16,086 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:18:16,086 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_i15_o15-2.c_Iteration1_Lasso [2020-11-29 19:18:16,086 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:18:16,086 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:18:16,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:18:16,784 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:18:16,794 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:18:16,804 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 [2020-11-29 19:18:16,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:18:16,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:18:16,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:18:16,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:18:16,822 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:18:16,822 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:16,831 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:18:16,884 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 [2020-11-29 19:18:16,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:18:16,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:18:16,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:18:16,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:18:16,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:18:16,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:18:16,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:16,893 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:16,932 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 [2020-11-29 19:18:16,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:18:16,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:18:16,934 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 19:18:16,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:18:16,952 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-29 19:18:16,952 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-29 19:18:16,976 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:18:17,088 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-29 19:18:17,088 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3be97865-6609-44d2-864b-0ba27418880c/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:18:17,121 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:18:17,170 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-11-29 19:18:17,170 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:18:17,171 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(id_#in~x) = 1*id_#in~x Supporting invariants [1*id_#in~x >= 0] [2020-11-29 19:18:17,248 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2020-11-29 19:18:17,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:17,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:18:17,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:18:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:17,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:18:17,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:18:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:18:17,591 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-29 19:18:17,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2020-11-29 19:18:17,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 31 states and 36 transitions. Complement of second has 13 states. [2020-11-29 19:18:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:18:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 19:18:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-11-29 19:18:17,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-29 19:18:17,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:18:17,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 19:18:17,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:18:17,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-29 19:18:17,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:18:17,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-11-29 19:18:17,903 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:18:17,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-29 19:18:17,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:18:17,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:18:17,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:18:17,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:18:17,909 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:18:17,909 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:18:17,909 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:18:17,910 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:18:17,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:18:17,910 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:18:17,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:18:17,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:18:17 BoogieIcfgContainer [2020-11-29 19:18:17,917 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:18:17,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:18:17,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:18:17,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:18:17,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:18:14" (3/4) ... [2020-11-29 19:18:17,922 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:18:17,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:18:17,925 INFO L168 Benchmark]: Toolchain (without parser) took 4651.89 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 78.8 MB in the beginning and 98.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:17,926 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory was 37.9 MB in the beginning and 37.8 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:18:17,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.69 ms. Allocated memory is still 109.1 MB. Free memory was 78.7 MB in the beginning and 85.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:17,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.10 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:18:17,929 INFO L168 Benchmark]: Boogie Preprocessor took 43.20 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 82.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:17,930 INFO L168 Benchmark]: RCFGBuilder took 636.90 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 72.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:17,931 INFO L168 Benchmark]: BuchiAutomizer took 3489.57 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 72.2 MB in the beginning and 99.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:17,932 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 146.8 MB. Free memory was 99.3 MB in the beginning and 98.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:18:17,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory was 37.9 MB in the beginning and 37.8 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.69 ms. Allocated memory is still 109.1 MB. Free memory was 78.7 MB in the beginning and 85.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.10 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.20 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 82.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 636.90 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 72.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3489.57 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 72.2 MB in the beginning and 99.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.93 ms. Allocated memory is still 146.8 MB. Free memory was 99.3 MB in the beginning and 98.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(x) and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital66 mio100 ax100 hnf100 lsp89 ukn73 mio100 lsp67 div100 bol100 ite100 ukn100 eq199 hnf96 smp100 dnf145 smp100 tf102 neg94 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 242ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...