./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/count_up_and_down_alloca.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_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/count_up_and_down_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 94f95b6ef0a3c8650bd30cb1958ada590298bd1c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:20:44,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:20:44,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:20:44,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:20:44,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:20:44,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:20:44,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:20:44,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:20:44,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:20:44,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:20:44,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:20:44,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:20:44,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:20:44,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:20:44,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:20:44,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:20:44,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:20:44,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:20:44,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:20:44,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:20:44,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:20:44,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:20:44,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:20:44,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:20:44,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:20:44,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:20:44,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:20:44,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:20:44,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:20:44,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:20:44,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:20:44,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:20:44,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:20:44,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:20:44,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:20:44,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:20:44,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:20:44,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:20:44,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:20:44,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:20:44,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:20:44,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 21:20:44,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:20:44,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:20:44,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:20:44,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:20:44,793 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:20:44,794 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:20:44,794 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:20:44,794 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:20:44,794 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:20:44,795 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:20:44,796 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:20:44,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:20:44,796 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:20:44,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:20:44,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:20:44,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:20:44,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:20:44,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:20:44,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:20:44,802 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:20:44,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:20:44,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:20:44,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:20:44,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:20:44,803 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:20:44,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:20:44,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:20:44,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:20:44,804 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:20:44,806 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:20:44,808 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_600f75bc-e63f-476c-8743-565d6b52388b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94f95b6ef0a3c8650bd30cb1958ada590298bd1c [2020-11-29 21:20:45,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:20:45,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:20:45,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:20:45,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:20:45,140 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:20:45,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/../../sv-benchmarks/c/termination-15/count_up_and_down_alloca.i [2020-11-29 21:20:45,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/data/f61ac454d/02554bfd6f86402abefecf63df77d7f4/FLAG0c2d6ea12 [2020-11-29 21:20:45,794 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:20:45,795 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/sv-benchmarks/c/termination-15/count_up_and_down_alloca.i [2020-11-29 21:20:45,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/data/f61ac454d/02554bfd6f86402abefecf63df77d7f4/FLAG0c2d6ea12 [2020-11-29 21:20:46,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/data/f61ac454d/02554bfd6f86402abefecf63df77d7f4 [2020-11-29 21:20:46,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:20:46,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:20:46,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:20:46,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:20:46,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:20:46,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dce1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46, skipping insertion in model container [2020-11-29 21:20:46,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:20:46,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:20:46,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:20:46,569 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:20:46,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:20:46,725 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:20:46,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46 WrapperNode [2020-11-29 21:20:46,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:20:46,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:20:46,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:20:46,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:20:46,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:20:46,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:20:46,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:20:46,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:20:46,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... [2020-11-29 21:20:46,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:20:46,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:20:46,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:20:46,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:20:46,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:20:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:20:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:20:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:20:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:20:46,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:20:47,210 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:20:47,211 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 21:20:47,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:20:47 BoogieIcfgContainer [2020-11-29 21:20:47,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:20:47,214 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:20:47,214 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:20:47,218 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:20:47,219 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:20:47,220 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:20:46" (1/3) ... [2020-11-29 21:20:47,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49cbe2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:20:47, skipping insertion in model container [2020-11-29 21:20:47,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:20:47,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:20:46" (2/3) ... [2020-11-29 21:20:47,222 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49cbe2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:20:47, skipping insertion in model container [2020-11-29 21:20:47,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:20:47,223 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:20:47" (3/3) ... [2020-11-29 21:20:47,224 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_up_and_down_alloca.i [2020-11-29 21:20:47,322 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:20:47,322 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:20:47,322 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:20:47,323 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:20:47,323 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:20:47,323 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:20:47,323 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:20:47,324 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:20:47,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 21:20:47,360 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 21:20:47,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:20:47,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:20:47,369 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 21:20:47,369 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:20:47,369 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:20:47,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 21:20:47,374 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 21:20:47,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:20:47,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:20:47,375 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 21:20:47,376 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:20:47,384 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 5#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 17#L367true assume !(main_~length~0 < 1); 3#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 12#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 15#L371-3true [2020-11-29 21:20:47,387 INFO L796 eck$LassoCheckResult]: Loop: 15#L371-3true assume !!(main_~i~0 < main_~length~0);call main_#t~mem208 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * (main_~i~0 - 1), 4);call write~int(1 + main_#t~mem208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~mem208; 13#L371-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 15#L371-3true [2020-11-29 21:20:47,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:47,408 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-29 21:20:47,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:47,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246996689] [2020-11-29 21:20:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:47,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:47,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:47,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2020-11-29 21:20:47,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:47,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759009222] [2020-11-29 21:20:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:47,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:47,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:47,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:47,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2020-11-29 21:20:47,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:47,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487669302] [2020-11-29 21:20:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:47,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:47,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:47,725 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:48,001 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-11-29 21:20:48,079 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:20:48,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:20:48,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:20:48,080 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:20:48,080 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:20:48,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:48,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:20:48,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:20:48,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration1_Lasso [2020-11-29 21:20:48,081 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:20:48,081 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:20:48,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:48,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:20:48,775 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:20:48,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:48,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:48,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:48,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:48,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:48,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:48,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:48,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:48,797 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:48,835 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:48,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:48,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:48,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:48,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:48,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:48,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:48,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:48,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:48,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:48,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:48,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:48,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:48,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:48,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:48,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:48,893 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 [2020-11-29 21:20:48,900 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:48,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:48,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:48,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:48,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:48,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:48,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:48,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:48,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:48,934 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:48,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:48,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:48,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:48,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:48,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:48,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:48,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:48,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:48,967 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:48,994 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:48,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:48,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:48,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:48,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:49,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:49,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:20:49,019 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:49,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:49,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:49,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:49,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:49,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:49,052 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:49,053 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:20:49,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:49,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:49,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:49,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:49,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:49,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:49,138 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:49,138 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:49,154 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:20:49,206 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-29 21:20:49,206 INFO L444 ModelExtractionUtils]: 9 out of 22 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:20:49,215 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:49,220 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 21:20:49,220 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:20:49,221 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~arr~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1) = -4*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~arr~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1 Supporting invariants [] [2020-11-29 21:20:49,365 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-29 21:20:49,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 21:20:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:49,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:20:49,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:49,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:20:49,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:49,495 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-29 21:20:49,496 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-11-29 21:20:49,638 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 36 states and 51 transitions. Complement of second has 9 states. [2020-11-29 21:20:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:20:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:20:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-11-29 21:20:49,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 21:20:49,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:49,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 21:20:49,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:49,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 21:20:49,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:49,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 51 transitions. [2020-11-29 21:20:49,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 21:20:49,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 13 states and 17 transitions. [2020-11-29 21:20:49,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 21:20:49,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 21:20:49,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-11-29 21:20:49,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:20:49,659 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-29 21:20:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-11-29 21:20:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 21:20:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 21:20:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-11-29 21:20:49,690 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-29 21:20:49,690 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-29 21:20:49,690 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:20:49,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-11-29 21:20:49,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 21:20:49,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:20:49,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:20:49,693 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:20:49,693 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:20:49,693 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 124#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 125#L367 assume !(main_~length~0 < 1); 131#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 132#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 135#L371-3 assume !(main_~i~0 < main_~length~0); 136#L371-4 main_~j~0 := 0; 129#L374-3 [2020-11-29 21:20:49,693 INFO L796 eck$LassoCheckResult]: Loop: 129#L374-3 assume !!(main_~j~0 < main_~length~0); 126#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 127#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 128#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 129#L374-3 [2020-11-29 21:20:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:49,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2020-11-29 21:20:49,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:49,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882584771] [2020-11-29 21:20:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:49,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:49,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:49,723 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:49,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2036812, now seen corresponding path program 1 times [2020-11-29 21:20:49,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:49,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362735818] [2020-11-29 21:20:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:49,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:49,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:49,740 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1386095268, now seen corresponding path program 1 times [2020-11-29 21:20:49,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:49,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332889673] [2020-11-29 21:20:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:49,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:49,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:49,780 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:49,969 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-11-29 21:20:50,022 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:20:50,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:20:50,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:20:50,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:20:50,023 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:20:50,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:20:50,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:20:50,023 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration2_Lasso [2020-11-29 21:20:50,023 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:20:50,023 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:20:50,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:50,224 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-29 21:20:50,584 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:20:50,584 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,594 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,598 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 [2020-11-29 21:20:50,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,642 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:50,648 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,687 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,693 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:50,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,746 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:50,746 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:20:50,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,797 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,797 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,894 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:50,985 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:50,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:50,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:50,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:50,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:50,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:50,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:50,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:50,992 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:51,043 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:51,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:51,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:51,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:51,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:51,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:51,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:51,053 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:51,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:51,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:51,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:51,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:51,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:51,110 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:51,110 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:51,129 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:51,168 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:51,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:51,171 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:51,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:51,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:51,186 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:51,187 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:51,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:20:51,248 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-11-29 21:20:51,249 INFO L444 ModelExtractionUtils]: 3 out of 25 variables were initially zero. Simplification set additionally 19 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:51,251 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:20:51,253 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 21:20:51,253 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:20:51,254 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 [] [2020-11-29 21:20:51,282 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 21:20:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:51,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:20:51,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:51,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:20:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:51,357 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 [2020-11-29 21:20:51,357 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 21:20:51,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2020-11-29 21:20:51,379 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 [2020-11-29 21:20:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:20:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-11-29 21:20:51,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-29 21:20:51,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:51,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 21:20:51,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:51,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2020-11-29 21:20:51,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:51,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-11-29 21:20:51,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:20:51,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 17 states and 23 transitions. [2020-11-29 21:20:51,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 21:20:51,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 21:20:51,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2020-11-29 21:20:51,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:20:51,384 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 21:20:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2020-11-29 21:20:51,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-29 21:20:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 21:20:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-29 21:20:51,388 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 21:20:51,389 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 21:20:51,389 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:20:51,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-11-29 21:20:51,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:20:51,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:20:51,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:20:51,394 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:20:51,394 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:20:51,394 INFO L794 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 220#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 221#L367 assume !(main_~length~0 < 1); 230#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 231#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 232#L371-3 assume !(main_~i~0 < main_~length~0); 235#L371-4 main_~j~0 := 0; 229#L374-3 assume !!(main_~j~0 < main_~length~0); 222#L375-3 [2020-11-29 21:20:51,394 INFO L796 eck$LassoCheckResult]: Loop: 222#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 223#L375-1 assume !!(main_#t~mem210 > 0);havoc main_#t~mem210;call main_#t~mem211 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post212 := main_#t~mem211;call write~int(main_#t~post212 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem211;havoc main_#t~post212; 222#L375-3 [2020-11-29 21:20:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:51,395 INFO L82 PathProgramCache]: Analyzing trace with hash 176705843, now seen corresponding path program 1 times [2020-11-29 21:20:51,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:51,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539989248] [2020-11-29 21:20:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:51,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:51,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:51,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:51,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 1 times [2020-11-29 21:20:51,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:51,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799030310] [2020-11-29 21:20:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:51,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:51,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:51,470 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1984375400, now seen corresponding path program 1 times [2020-11-29 21:20:51,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:51,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778103196] [2020-11-29 21:20:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:51,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778103196] [2020-11-29 21:20:51,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:20:51,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:20:51,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761321711] [2020-11-29 21:20:51,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:20:51,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:20:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:20:51,695 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-11-29 21:20:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:20:51,785 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-11-29 21:20:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:20:51,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2020-11-29 21:20:51,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:20:51,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 32 transitions. [2020-11-29 21:20:51,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-29 21:20:51,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-29 21:20:51,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 32 transitions. [2020-11-29 21:20:51,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:20:51,789 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2020-11-29 21:20:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 32 transitions. [2020-11-29 21:20:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2020-11-29 21:20:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 21:20:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-11-29 21:20:51,792 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-29 21:20:51,792 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-29 21:20:51,792 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:20:51,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2020-11-29 21:20:51,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:20:51,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:20:51,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:20:51,797 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:20:51,797 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:20:51,798 INFO L794 eck$LassoCheckResult]: Stem: 286#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 282#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 283#L367 assume !(main_~length~0 < 1); 287#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 288#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 289#L371-3 assume !(main_~i~0 < main_~length~0); 293#L371-4 main_~j~0 := 0; 284#L374-3 assume !!(main_~j~0 < main_~length~0); 285#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 292#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 280#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 281#L374-3 assume !!(main_~j~0 < main_~length~0); 276#L375-3 [2020-11-29 21:20:51,798 INFO L796 eck$LassoCheckResult]: Loop: 276#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 277#L375-1 assume !!(main_#t~mem210 > 0);havoc main_#t~mem210;call main_#t~mem211 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post212 := main_#t~mem211;call write~int(main_#t~post212 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem211;havoc main_#t~post212; 276#L375-3 [2020-11-29 21:20:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash -19280312, now seen corresponding path program 2 times [2020-11-29 21:20:51,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:51,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369014739] [2020-11-29 21:20:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:51,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369014739] [2020-11-29 21:20:51,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24527653] [2020-11-29 21:20:51,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:20:51,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:20:51,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:20:51,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:20:51,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:51,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:20:51,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-11-29 21:20:51,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741214442] [2020-11-29 21:20:51,994 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 21:20:51,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:51,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 2 times [2020-11-29 21:20:51,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:51,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354181336] [2020-11-29 21:20:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,017 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:52,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:20:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:20:52,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:20:52,057 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-29 21:20:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:20:52,233 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-29 21:20:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:20:52,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2020-11-29 21:20:52,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:20:52,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 22 transitions. [2020-11-29 21:20:52,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 21:20:52,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 21:20:52,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 22 transitions. [2020-11-29 21:20:52,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:20:52,236 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-29 21:20:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 22 transitions. [2020-11-29 21:20:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-29 21:20:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 21:20:52,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-29 21:20:52,238 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-29 21:20:52,238 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-29 21:20:52,238 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 21:20:52,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-11-29 21:20:52,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:20:52,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:20:52,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:20:52,240 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:20:52,240 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:20:52,240 INFO L794 eck$LassoCheckResult]: Stem: 391#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 385#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 386#L367 assume !(main_~length~0 < 1); 392#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 393#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 396#L371-3 assume !!(main_~i~0 < main_~length~0);call main_#t~mem208 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * (main_~i~0 - 1), 4);call write~int(1 + main_#t~mem208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~mem208; 394#L371-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 395#L371-3 assume !(main_~i~0 < main_~length~0); 398#L371-4 main_~j~0 := 0; 389#L374-3 assume !!(main_~j~0 < main_~length~0); 390#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 397#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 387#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 388#L374-3 assume !!(main_~j~0 < main_~length~0); 381#L375-3 [2020-11-29 21:20:52,240 INFO L796 eck$LassoCheckResult]: Loop: 381#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 382#L375-1 assume !!(main_#t~mem210 > 0);havoc main_#t~mem210;call main_#t~mem211 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post212 := main_#t~mem211;call write~int(main_#t~post212 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem211;havoc main_#t~post212; 381#L375-3 [2020-11-29 21:20:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:52,240 INFO L82 PathProgramCache]: Analyzing trace with hash -744742010, now seen corresponding path program 1 times [2020-11-29 21:20:52,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:52,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686692501] [2020-11-29 21:20:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,299 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 3 times [2020-11-29 21:20:52,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:52,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549980102] [2020-11-29 21:20:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,314 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,316 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:52,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1562468139, now seen corresponding path program 1 times [2020-11-29 21:20:52,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:20:52,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548422416] [2020-11-29 21:20:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:20:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:20:52,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:20:52,382 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:20:52,649 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2020-11-29 21:20:52,715 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:20:52,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:20:52,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:20:52,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:20:52,716 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:20:52,716 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:52,716 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:20:52,716 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:20:52,716 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration5_Lasso [2020-11-29 21:20:52,716 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:20:52,716 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:20:52,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,893 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-29 21:20:52,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:52,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:20:53,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:20:53,299 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:53,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:53,317 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:53,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:53,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:53,380 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:53,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,383 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:53,383 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:20:53,386 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:53,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,410 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:53,411 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:53,433 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:53,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:53,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,460 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:53,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:53,485 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:53,488 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:53,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,514 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:20:53,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:20:53,537 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600f75bc-e63f-476c-8743-565d6b52388b/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 [2020-11-29 21:20:53,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:20:53,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:20:53,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:20:53,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:20:53,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:20:53,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:20:53,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:20:53,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:20:53,576 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:20:53,582 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:20:53,583 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_600f75bc-e63f-476c-8743-565d6b52388b/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) [2020-11-29 21:20:53,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:20:53,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:20:53,585 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:20:53,585 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))_2) = 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))_2 Supporting invariants [] Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:20:53,617 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-11-29 21:20:53,618 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 21:20:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:53,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:20:53,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:53,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:20:53,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:53,672 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 [2020-11-29 21:20:53,672 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 21:20:53,708 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 21 states and 24 transitions. Complement of second has 7 states. [2020-11-29 21:20:53,709 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 [2020-11-29 21:20:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:20:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-29 21:20:53,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-29 21:20:53,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:53,710 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:20:53,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:20:53,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:53,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:20:53,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:53,795 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 [2020-11-29 21:20:53,795 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 21:20:53,810 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 21 states and 24 transitions. Complement of second has 7 states. [2020-11-29 21:20:53,811 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 [2020-11-29 21:20:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:20:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-29 21:20:53,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-29 21:20:53,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:53,812 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:20:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:20:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:53,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:20:53,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:20:53,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:20:53,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:20:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:20:53,877 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 [2020-11-29 21:20:53,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 21:20:53,901 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 23 states and 28 transitions. Complement of second has 6 states. [2020-11-29 21:20:53,902 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 [2020-11-29 21:20:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:20:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-29 21:20:53,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-29 21:20:53,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:53,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 2 letters. [2020-11-29 21:20:53,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:53,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2020-11-29 21:20:53,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:20:53,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-11-29 21:20:53,905 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:20:53,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-11-29 21:20:53,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:20:53,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:20:53,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:20:53,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:20:53,906 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:20:53,906 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:20:53,906 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:20:53,906 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 21:20:53,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:20:53,906 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:20:53,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:20:53,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:20:53 BoogieIcfgContainer [2020-11-29 21:20:53,912 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:20:53,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:20:53,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:20:53,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:20:53,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:20:47" (3/4) ... [2020-11-29 21:20:53,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:20:53,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:20:53,918 INFO L168 Benchmark]: Toolchain (without parser) took 7790.43 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 74.8 MB in the beginning and 99.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:53,918 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:53,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.92 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 49.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:53,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 100.7 MB. Free memory was 49.6 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:53,920 INFO L168 Benchmark]: Boogie Preprocessor took 24.23 ms. Allocated memory is still 100.7 MB. Free memory was 47.9 MB in the beginning and 46.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:53,921 INFO L168 Benchmark]: RCFGBuilder took 414.87 ms. Allocated memory is still 100.7 MB. Free memory was 46.5 MB in the beginning and 33.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:53,921 INFO L168 Benchmark]: BuchiAutomizer took 6698.20 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 32.9 MB in the beginning and 99.9 MB in the end (delta: -67.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:53,922 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 148.9 MB. Free memory is still 99.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:53,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 598.92 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 49.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 100.7 MB. Free memory was 49.6 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.23 ms. Allocated memory is still 100.7 MB. Free memory was 47.9 MB in the beginning and 46.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 414.87 ms. Allocated memory is still 100.7 MB. Free memory was 46.5 MB in the beginning and 33.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6698.20 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 32.9 MB in the beginning and 99.9 MB in the end (delta: -67.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.96 ms. Allocated memory is still 148.9 MB. Free memory is still 99.9 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 #length - 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -4 * i + -1 * arr + unknown-#length-unknown[__builtin_alloca(length*sizeof(int))] and consists of 6 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.6s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 5.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 73 SDtfs, 109 SDslu, 51 SDs, 0 SdLazy, 121 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital131 mio100 ax100 hnf97 lsp95 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq169 hnf87 smp96 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 2 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...