./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9016787135830d25851d4a1126db5f65005e4eb5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:13:18,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:13:18,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:13:18,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:13:18,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:13:18,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:13:18,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:13:18,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:13:18,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:13:18,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:13:18,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:13:18,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:13:18,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:13:18,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:13:18,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:13:18,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:13:18,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:13:18,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:13:18,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:13:18,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:13:18,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:13:18,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:13:18,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:13:18,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:13:18,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:13:18,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:13:18,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:13:18,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:13:18,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:13:18,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:13:18,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:13:18,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:13:18,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:13:18,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:13:18,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:13:18,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:13:18,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:13:18,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:13:18,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:13:18,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:13:18,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:13:18,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:13:19,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:13:19,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:13:19,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:13:19,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:13:19,031 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:13:19,031 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:13:19,031 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:13:19,032 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:13:19,032 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:13:19,032 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:13:19,032 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:13:19,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:13:19,033 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:13:19,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:13:19,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:13:19,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:13:19,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:13:19,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:13:19,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:13:19,034 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:13:19,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:13:19,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:13:19,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:13:19,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:13:19,035 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:13:19,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:13:19,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:13:19,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:13:19,036 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:13:19,037 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:13:19,038 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_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9016787135830d25851d4a1126db5f65005e4eb5 [2020-11-30 01:13:19,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:13:19,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:13:19,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:13:19,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:13:19,318 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:13:19,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2020-11-30 01:13:19,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/data/a1d2dffcf/628d9c1666dc48a1b9c660d082ef8b12/FLAG7856fa8bc [2020-11-30 01:13:19,976 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:13:19,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2020-11-30 01:13:19,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/data/a1d2dffcf/628d9c1666dc48a1b9c660d082ef8b12/FLAG7856fa8bc [2020-11-30 01:13:20,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/data/a1d2dffcf/628d9c1666dc48a1b9c660d082ef8b12 [2020-11-30 01:13:20,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:13:20,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:13:20,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:20,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:13:20,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:13:20,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c8487e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20, skipping insertion in model container [2020-11-30 01:13:20,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:13:20,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:13:20,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:20,638 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:13:20,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:20,741 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:13:20,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20 WrapperNode [2020-11-30 01:13:20,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:20,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:20,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:13:20,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:13:20,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:20,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:13:20,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:13:20,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:13:20,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... [2020-11-30 01:13:20,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:13:20,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:13:20,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:13:20,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:13:20,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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 [2020-11-30 01:13:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:13:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:13:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:13:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:13:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:13:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:21,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:21,255 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 01:13:21,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:21 BoogieIcfgContainer [2020-11-30 01:13:21,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:21,268 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:13:21,268 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:13:21,271 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:13:21,276 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:21,276 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:13:20" (1/3) ... [2020-11-30 01:13:21,277 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@409fa42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:13:21, skipping insertion in model container [2020-11-30 01:13:21,277 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:21,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:20" (2/3) ... [2020-11-30 01:13:21,278 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@409fa42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:13:21, skipping insertion in model container [2020-11-30 01:13:21,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:21,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:21" (3/3) ... [2020-11-30 01:13:21,279 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-2.i [2020-11-30 01:13:21,324 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:13:21,324 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:13:21,324 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:13:21,324 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:21,324 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:21,324 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:13:21,324 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:21,325 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:13:21,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-30 01:13:21,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 01:13:21,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:21,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:21,365 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:13:21,365 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:13:21,365 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:13:21,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-30 01:13:21,367 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 01:13:21,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:21,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:21,368 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:13:21,368 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:13:21,375 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L551true assume !(main_~length~0 < 1); 18#L551-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 9#L553true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 13#L554-3true [2020-11-30 01:13:21,376 INFO L796 eck$LassoCheckResult]: Loop: 13#L554-3true assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L556true assume main_~val~0 < 0;main_~val~0 := 0; 7#L556-2true call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 11#L554-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 13#L554-3true [2020-11-30 01:13:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:21,382 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-30 01:13:21,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:21,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480774168] [2020-11-30 01:13:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:21,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:21,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:21,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:21,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2020-11-30 01:13:21,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:21,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83587807] [2020-11-30 01:13:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:21,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:21,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:21,622 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:21,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2020-11-30 01:13:21,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:21,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246423341] [2020-11-30 01:13:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:21,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:21,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:21,714 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:22,040 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-30 01:13:22,099 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:22,104 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:22,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:22,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:22,105 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:13:22,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:22,105 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:22,105 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:22,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration1_Lasso [2020-11-30 01:13:22,105 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:22,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:22,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,308 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-11-30 01:13:22,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:22,776 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:22,784 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:22,801 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 [2020-11-30 01:13:22,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:22,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:22,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:22,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:22,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:22,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:22,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:22,809 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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 [2020-11-30 01:13:22,849 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 [2020-11-30 01:13:22,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:22,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:22,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:22,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:22,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:22,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:22,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:22,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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) [2020-11-30 01:13:22,928 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 [2020-11-30 01:13:22,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:22,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:22,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:22,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:22,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:22,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:22,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:22,936 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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 [2020-11-30 01:13:22,970 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 [2020-11-30 01:13:22,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:22,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:22,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:22,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:22,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:22,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:22,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:22,975 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:23,000 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 [2020-11-30 01:13:23,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:23,001 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:23,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:23,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:23,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:23,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:23,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:23,004 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:23,030 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 [2020-11-30 01:13:23,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:23,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:23,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:23,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:23,046 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:23,046 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:23,054 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:23,087 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 [2020-11-30 01:13:23,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:23,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:23,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:23,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:23,095 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:23,095 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:23,111 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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) [2020-11-30 01:13:23,160 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 [2020-11-30 01:13:23,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:23,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:23,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:23,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:23,190 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:23,191 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:23,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:13:23,373 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-11-30 01:13:23,373 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/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) [2020-11-30 01:13:23,380 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 [2020-11-30 01:13:23,384 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:13:23,384 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:13:23,385 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-30 01:13:23,418 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 01:13:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:23,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:13:23,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:23,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:23,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:23,578 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 [2020-11-30 01:13:23,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-11-30 01:13:23,643 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2020-11-30 01:13:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:13:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:13:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-11-30 01:13:23,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 01:13:23,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:23,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-30 01:13:23,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:23,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2020-11-30 01:13:23,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:23,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2020-11-30 01:13:23,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:13:23,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2020-11-30 01:13:23,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:13:23,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:13:23,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-11-30 01:13:23,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:23,662 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-30 01:13:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-11-30 01:13:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 01:13:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 01:13:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-11-30 01:13:23,684 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-30 01:13:23,684 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-30 01:13:23,684 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:13:23,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-11-30 01:13:23,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:13:23,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:23,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:23,686 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:23,686 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:13:23,687 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L551 assume !(main_~length~0 < 1); 138#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 134#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 135#L554-3 assume !(main_~i~0 < main_~length~0); 139#L554-4 main_~j~0 := 0; 127#L561-3 [2020-11-30 01:13:23,687 INFO L796 eck$LassoCheckResult]: Loop: 127#L561-3 assume !!(main_~j~0 < main_~length~0); 128#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 140#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 141#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 127#L561-3 [2020-11-30 01:13:23,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:23,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2020-11-30 01:13:23,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:23,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46283967] [2020-11-30 01:13:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:23,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46283967] [2020-11-30 01:13:23,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:23,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:13:23,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318425166] [2020-11-30 01:13:23,771 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:13:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2020-11-30 01:13:23,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:23,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939773471] [2020-11-30 01:13:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:23,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:23,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:23,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:13:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:13:23,848 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-30 01:13:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:23,885 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-30 01:13:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:13:23,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-11-30 01:13:23,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:13:23,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2020-11-30 01:13:23,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:13:23,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:13:23,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-11-30 01:13:23,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:23,889 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-30 01:13:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-11-30 01:13:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-11-30 01:13:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 01:13:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-30 01:13:23,891 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-30 01:13:23,891 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-30 01:13:23,891 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:13:23,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-11-30 01:13:23,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:13:23,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:23,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:23,893 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:23,893 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:13:23,893 INFO L794 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 172#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 173#L551 assume !(main_~length~0 < 1); 178#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 174#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 175#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 169#L556 assume !(main_~val~0 < 0); 170#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 171#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 177#L554-3 assume !(main_~i~0 < main_~length~0); 179#L554-4 main_~j~0 := 0; 167#L561-3 [2020-11-30 01:13:23,893 INFO L796 eck$LassoCheckResult]: Loop: 167#L561-3 assume !!(main_~j~0 < main_~length~0); 168#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 180#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 181#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 167#L561-3 [2020-11-30 01:13:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:23,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2020-11-30 01:13:23,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:23,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880598340] [2020-11-30 01:13:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:23,939 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:23,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2020-11-30 01:13:23,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:23,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269278776] [2020-11-30 01:13:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:23,971 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2020-11-30 01:13:23,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:23,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472860488] [2020-11-30 01:13:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:23,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:24,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:24,030 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:24,269 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-11-30 01:13:24,350 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:24,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:24,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:24,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:24,351 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:13:24,351 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:24,351 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:24,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:24,351 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration3_Lasso [2020-11-30 01:13:24,351 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:24,352 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:24,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,532 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-11-30 01:13:24,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:24,904 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:24,904 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:24,918 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 [2020-11-30 01:13:24,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:24,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:24,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:24,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:24,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:24,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:24,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:24,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:24,968 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 [2020-11-30 01:13:24,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:24,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:24,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:24,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:24,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:24,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:24,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:24,979 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:25,039 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 [2020-11-30 01:13:25,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:25,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:25,049 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:25,088 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 [2020-11-30 01:13:25,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:25,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:25,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:25,092 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:25,133 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 [2020-11-30 01:13:25,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:25,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:25,146 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:25,188 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 [2020-11-30 01:13:25,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,196 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:25,196 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:25,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:25,245 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 [2020-11-30 01:13:25,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,252 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:25,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:25,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/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 [2020-11-30 01:13:25,305 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 [2020-11-30 01:13:25,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:25,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:25,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/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 [2020-11-30 01:13:25,356 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 [2020-11-30 01:13:25,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:25,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:25,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:25,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:25,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:25,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:25,395 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:13:25,462 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-11-30 01:13:25,462 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:25,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:25,478 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:13:25,478 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:13:25,478 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-30 01:13:25,523 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 01:13:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:25,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:13:25,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:25,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:25,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:25,589 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 [2020-11-30 01:13:25,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-30 01:13:25,615 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 20 states and 26 transitions. Complement of second has 4 states. [2020-11-30 01:13:25,616 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 [2020-11-30 01:13:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:13:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-11-30 01:13:25,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-30 01:13:25,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:25,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-30 01:13:25,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:25,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-30 01:13:25,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:25,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2020-11-30 01:13:25,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:25,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 25 transitions. [2020-11-30 01:13:25,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:13:25,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:13:25,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-11-30 01:13:25,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:13:25,620 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-30 01:13:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-11-30 01:13:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-30 01:13:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:13:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-11-30 01:13:25,622 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-11-30 01:13:25,622 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-11-30 01:13:25,622 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:13:25,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-11-30 01:13:25,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:25,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:25,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:25,624 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:25,624 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:13:25,624 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 286#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 287#L551 assume !(main_~length~0 < 1); 293#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 288#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 289#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 283#L556 assume !(main_~val~0 < 0); 284#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 285#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 291#L554-3 assume !(main_~i~0 < main_~length~0); 292#L554-4 main_~j~0 := 0; 279#L561-3 assume !!(main_~j~0 < main_~length~0); 281#L562-3 [2020-11-30 01:13:25,627 INFO L796 eck$LassoCheckResult]: Loop: 281#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 294#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 281#L562-3 [2020-11-30 01:13:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2020-11-30 01:13:25,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:25,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259707774] [2020-11-30 01:13:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:25,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:25,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:25,671 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:25,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2020-11-30 01:13:25,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:25,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258772936] [2020-11-30 01:13:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:25,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:25,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:25,698 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:25,700 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2020-11-30 01:13:25,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:25,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664935667] [2020-11-30 01:13:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:25,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:25,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:25,750 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:25,950 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-11-30 01:13:26,024 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:26,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:26,024 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:26,024 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:26,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:13:26,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,025 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:26,025 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:26,025 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration4_Lasso [2020-11-30 01:13:26,025 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:26,025 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:26,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,234 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-30 01:13:26,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:26,656 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:26,656 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,667 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 [2020-11-30 01:13:26,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:26,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:26,670 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:26,671 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,693 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 [2020-11-30 01:13:26,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:26,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:26,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:26,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:26,719 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,729 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:26,729 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:26,753 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,776 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 [2020-11-30 01:13:26,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:26,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:26,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:26,779 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,803 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 [2020-11-30 01:13:26,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,818 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:26,818 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:26,824 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,853 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 [2020-11-30 01:13:26,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:26,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:26,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:26,856 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,880 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 [2020-11-30 01:13:26,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,884 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:26,885 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:26,902 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,935 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 [2020-11-30 01:13:26,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:26,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:26,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:26,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:26,943 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:26,943 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:26,953 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:13:26,978 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-30 01:13:26,978 INFO L444 ModelExtractionUtils]: 2 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:26,980 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:26,983 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:13:26,983 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:13:26,983 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1 Supporting invariants [] [2020-11-30 01:13:27,014 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-30 01:13:27,017 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:13:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:27,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:13:27,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:27,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:13:27,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:27,183 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-30 01:13:27,183 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-11-30 01:13:27,310 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 39 states and 51 transitions. Complement of second has 11 states. [2020-11-30 01:13:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-30 01:13:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:13:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-11-30 01:13:27,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-30 01:13:27,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:27,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-30 01:13:27,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:27,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-30 01:13:27,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:27,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-11-30 01:13:27,315 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:27,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 44 transitions. [2020-11-30 01:13:27,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-30 01:13:27,316 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-30 01:13:27,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-11-30 01:13:27,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:13:27,316 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-11-30 01:13:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-11-30 01:13:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-11-30 01:13:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 01:13:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-11-30 01:13:27,327 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-30 01:13:27,328 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-30 01:13:27,328 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:13:27,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2020-11-30 01:13:27,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:27,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:27,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:27,331 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:27,332 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:13:27,332 INFO L794 eck$LassoCheckResult]: Stem: 449#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 445#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 446#L551 assume !(main_~length~0 < 1); 455#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 447#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 448#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 452#L556 assume !(main_~val~0 < 0); 463#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 450#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 451#L554-3 assume !(main_~i~0 < main_~length~0); 461#L554-4 main_~j~0 := 0; 437#L561-3 assume !!(main_~j~0 < main_~length~0); 438#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 462#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 460#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 439#L561-3 assume !!(main_~j~0 < main_~length~0); 441#L562-3 [2020-11-30 01:13:27,333 INFO L796 eck$LassoCheckResult]: Loop: 441#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 456#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 441#L562-3 [2020-11-30 01:13:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2020-11-30 01:13:27,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:27,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244264629] [2020-11-30 01:13:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:27,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244264629] [2020-11-30 01:13:27,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379447177] [2020-11-30 01:13:27,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:13:27,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:13:27,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:13:27,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:13:27,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:27,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:13:27,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-30 01:13:27,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696103224] [2020-11-30 01:13:27,552 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:13:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2020-11-30 01:13:27,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:27,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400140482] [2020-11-30 01:13:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:27,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:27,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:27,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:27,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:27,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:13:27,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:13:27,606 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 10 states. [2020-11-30 01:13:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:27,816 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-11-30 01:13:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:13:27,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2020-11-30 01:13:27,818 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-30 01:13:27,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 40 states and 51 transitions. [2020-11-30 01:13:27,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-30 01:13:27,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-30 01:13:27,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-11-30 01:13:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:13:27,820 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-30 01:13:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-11-30 01:13:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-11-30 01:13:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 01:13:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-30 01:13:27,823 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-30 01:13:27,823 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-30 01:13:27,823 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 01:13:27,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-30 01:13:27,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:27,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:27,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:27,826 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:27,826 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:13:27,826 INFO L794 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 589#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 590#L551 assume main_~length~0 < 1;main_~length~0 := 1; 595#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 615#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 597#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 598#L556 assume !(main_~val~0 < 0); 613#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 612#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 611#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 608#L556 assume !(main_~val~0 < 0); 610#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 609#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 607#L554-3 assume !(main_~i~0 < main_~length~0); 602#L554-4 main_~j~0 := 0; 581#L561-3 assume !!(main_~j~0 < main_~length~0); 582#L562-3 [2020-11-30 01:13:27,826 INFO L796 eck$LassoCheckResult]: Loop: 582#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 599#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 582#L562-3 [2020-11-30 01:13:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:27,827 INFO L82 PathProgramCache]: Analyzing trace with hash -420071865, now seen corresponding path program 1 times [2020-11-30 01:13:27,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:27,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252936282] [2020-11-30 01:13:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:27,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252936282] [2020-11-30 01:13:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642899271] [2020-11-30 01:13:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:13:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:27,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:27,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:28,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:13:28,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-11-30 01:13:28,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120123627] [2020-11-30 01:13:28,004 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:13:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:28,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2020-11-30 01:13:28,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:28,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668180898] [2020-11-30 01:13:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:28,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:13:28,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:28,062 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand 5 states. [2020-11-30 01:13:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:28,097 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-11-30 01:13:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:13:28,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-11-30 01:13:28,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:28,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 28 transitions. [2020-11-30 01:13:28,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:13:28,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:13:28,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2020-11-30 01:13:28,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:13:28,099 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-30 01:13:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2020-11-30 01:13:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 01:13:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:13:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-11-30 01:13:28,102 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-30 01:13:28,102 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-30 01:13:28,102 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 01:13:28,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-11-30 01:13:28,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:28,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:28,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:28,106 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:28,106 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:13:28,107 INFO L794 eck$LassoCheckResult]: Stem: 711#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 707#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 708#L551 assume !(main_~length~0 < 1); 713#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 709#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 710#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 704#L556 assume !(main_~val~0 < 0); 705#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 706#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 712#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 714#L556 assume !(main_~val~0 < 0); 721#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 720#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 719#L554-3 assume !(main_~i~0 < main_~length~0); 718#L554-4 main_~j~0 := 0; 700#L561-3 assume !!(main_~j~0 < main_~length~0); 701#L562-3 [2020-11-30 01:13:28,108 INFO L796 eck$LassoCheckResult]: Loop: 701#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 715#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 701#L562-3 [2020-11-30 01:13:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1431189115, now seen corresponding path program 2 times [2020-11-30 01:13:28,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:28,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328879168] [2020-11-30 01:13:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 4 times [2020-11-30 01:13:28,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:28,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482381595] [2020-11-30 01:13:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,168 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:28,170 INFO L82 PathProgramCache]: Analyzing trace with hash -983203254, now seen corresponding path program 2 times [2020-11-30 01:13:28,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:28,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231089064] [2020-11-30 01:13:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:28,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:28,237 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:28,490 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-11-30 01:13:28,556 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:28,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:28,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:28,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:28,556 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:13:28,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:28,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:28,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:28,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration7_Lasso [2020-11-30 01:13:28,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:28,557 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:28,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,703 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-11-30 01:13:28,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:28,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:29,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:29,045 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,049 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 [2020-11-30 01:13:29,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:29,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,051 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:29,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:29,053 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,074 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 [2020-11-30 01:13:29,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:29,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:29,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:29,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,099 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 [2020-11-30 01:13:29,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,103 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,110 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:13:29,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,137 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,137 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,140 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:13:29,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,165 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:29,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:29,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:29,167 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,190 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 [2020-11-30 01:13:29,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:29,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:29,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:29,192 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,215 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 [2020-11-30 01:13:29,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,217 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,255 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 [2020-11-30 01:13:29,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,260 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,266 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,292 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 [2020-11-30 01:13:29,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,300 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,353 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 [2020-11-30 01:13:29,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,357 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,357 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,359 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,387 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 [2020-11-30 01:13:29,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,393 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:29,393 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:29,399 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,420 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 [2020-11-30 01:13:29,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:29,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:29,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:29,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:29,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:29,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:29,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:29,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:13:29,426 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:13:29,426 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:29,429 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:13:29,429 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:13:29,429 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:13:29,429 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] [2020-11-30 01:13:29,455 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 01:13:29,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:13:29,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:13:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:29,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:13:29,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:29,513 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 [2020-11-30 01:13:29,513 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-30 01:13:29,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 7 states. [2020-11-30 01:13:29,529 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 [2020-11-30 01:13:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:13:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-30 01:13:29,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2020-11-30 01:13:29,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:29,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2020-11-30 01:13:29,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:29,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-30 01:13:29,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:29,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-30 01:13:29,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:29,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2020-11-30 01:13:29,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:13:29,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:13:29,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2020-11-30 01:13:29,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:13:29,533 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-30 01:13:29,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2020-11-30 01:13:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-30 01:13:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 01:13:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-11-30 01:13:29,535 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-11-30 01:13:29,535 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-11-30 01:13:29,535 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 01:13:29,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2020-11-30 01:13:29,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:13:29,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:29,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:29,536 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:29,537 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:13:29,537 INFO L794 eck$LassoCheckResult]: Stem: 855#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 851#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 852#L551 assume !(main_~length~0 < 1); 857#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 853#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 854#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 848#L556 assume !(main_~val~0 < 0); 849#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 850#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 856#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 858#L556 assume !(main_~val~0 < 0); 866#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 865#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 864#L554-3 assume !(main_~i~0 < main_~length~0); 862#L554-4 main_~j~0 := 0; 843#L561-3 assume !!(main_~j~0 < main_~length~0); 844#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 860#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 861#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 845#L561-3 assume !!(main_~j~0 < main_~length~0); 846#L562-3 [2020-11-30 01:13:29,537 INFO L796 eck$LassoCheckResult]: Loop: 846#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 859#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 846#L562-3 [2020-11-30 01:13:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2020-11-30 01:13:29,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:29,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994795455] [2020-11-30 01:13:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:29,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:29,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:29,563 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 5 times [2020-11-30 01:13:29,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:29,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449670152] [2020-11-30 01:13:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:29,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:29,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:29,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:29,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2020-11-30 01:13:29,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889844320] [2020-11-30 01:13:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:29,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:29,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:29,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:29,933 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2020-11-30 01:13:30,029 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:30,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:30,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:30,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:30,029 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:13:30,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:30,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:30,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration8_Lasso [2020-11-30 01:13:30,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:30,030 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:30,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:13:30,531 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:30,531 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,540 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 [2020-11-30 01:13:30,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:30,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,542 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:30,542 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:30,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,565 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 [2020-11-30 01:13:30,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,567 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:30,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:30,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:30,569 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,590 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 [2020-11-30 01:13:30,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:30,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:30,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:30,599 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,623 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 [2020-11-30 01:13:30,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,626 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:30,626 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:30,640 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:30,680 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 [2020-11-30 01:13:30,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,688 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:30,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,735 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 [2020-11-30 01:13:30,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,738 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:30,738 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:13:30,743 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:13:30,784 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 [2020-11-30 01:13:30,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,790 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:13:30,790 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,797 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,823 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 [2020-11-30 01:13:30,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:30,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:30,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:30,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:30,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:30,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:30,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:30,827 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:13:30,831 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:13:30,831 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_874cc17e-7dc9-4f2d-9192-ca50ca6a9001/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:30,834 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:13:30,834 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:13:30,834 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:13:30,834 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4 Supporting invariants [] [2020-11-30 01:13:30,865 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-11-30 01:13:30,866 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:13:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:13:30,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:30,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:13:30,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:30,919 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 [2020-11-30 01:13:30,919 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-30 01:13:30,936 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-11-30 01:13:30,938 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 [2020-11-30 01:13:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:13:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-30 01:13:30,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-11-30 01:13:30,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:30,939 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:13:30,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:30,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:13:30,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:30,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:13:30,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:30,987 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 [2020-11-30 01:13:30,987 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-30 01:13:30,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-11-30 01:13:30,999 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 [2020-11-30 01:13:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:13:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-30 01:13:31,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-11-30 01:13:31,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:31,000 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:13:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:31,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:13:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:31,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:13:31,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:31,063 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 [2020-11-30 01:13:31,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-30 01:13:31,086 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2020-11-30 01:13:31,086 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 [2020-11-30 01:13:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:13:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-11-30 01:13:31,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2020-11-30 01:13:31,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:31,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2020-11-30 01:13:31,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:31,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2020-11-30 01:13:31,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:31,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-30 01:13:31,089 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:13:31,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-30 01:13:31,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:13:31,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:13:31,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:13:31,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:31,090 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:31,090 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:31,090 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:31,090 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 01:13:31,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:13:31,090 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:13:31,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:13:31,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:13:31 BoogieIcfgContainer [2020-11-30 01:13:31,097 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:13:31,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:13:31,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:13:31,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:13:31,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:21" (3/4) ... [2020-11-30 01:13:31,101 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:13:31,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:13:31,103 INFO L168 Benchmark]: Toolchain (without parser) took 10806.38 ms. Allocated memory was 113.2 MB in the beginning and 207.6 MB in the end (delta: 94.4 MB). Free memory was 82.4 MB in the beginning and 111.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:31,103 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:31,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.95 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 62.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:31,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.83 ms. Allocated memory is still 113.2 MB. Free memory was 62.7 MB in the beginning and 61.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:31,105 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 113.2 MB. Free memory was 61.2 MB in the beginning and 60.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:31,105 INFO L168 Benchmark]: RCFGBuilder took 455.57 ms. Allocated memory is still 113.2 MB. Free memory was 60.0 MB in the beginning and 78.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:31,106 INFO L168 Benchmark]: BuchiAutomizer took 9829.18 ms. Allocated memory was 113.2 MB in the beginning and 207.6 MB in the end (delta: 94.4 MB). Free memory was 78.6 MB in the beginning and 111.2 MB in the end (delta: -32.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:31,106 INFO L168 Benchmark]: Witness Printer took 4.54 ms. Allocated memory is still 207.6 MB. Free memory is still 111.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:31,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 438.95 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 62.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.83 ms. Allocated memory is still 113.2 MB. Free memory was 62.7 MB in the beginning and 61.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 113.2 MB. Free memory was 61.2 MB in the beginning and 60.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 455.57 ms. Allocated memory is still 113.2 MB. Free memory was 60.0 MB in the beginning and 78.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9829.18 ms. Allocated memory was 113.2 MB in the beginning and 207.6 MB in the end (delta: 94.4 MB). Free memory was 78.6 MB in the beginning and 111.2 MB in the end (delta: -32.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.54 ms. Allocated memory is still 207.6 MB. Free memory is still 111.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr + i * 4 + -4] and consists of 8 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.7s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 8.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 135 SDtfs, 195 SDslu, 110 SDs, 0 SdLazy, 204 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU3 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital140 mio100 ax113 hnf97 lsp83 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq155 hnf90 smp86 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...