./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_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:39,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:39,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:39,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:39,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:39,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:39,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:39,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:39,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:39,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:39,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:39,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:39,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:39,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:39,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:39,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:39,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:39,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:39,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:39,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:39,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:39,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:39,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:39,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:39,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:39,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:39,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:39,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:39,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:39,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:39,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:39,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:39,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:39,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:39,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:39,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:39,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:39,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:39,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:39,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:39,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:39,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:19:39,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:39,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:39,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:39,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:39,781 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:39,781 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:19:39,781 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:19:39,781 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:19:39,781 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:19:39,781 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:19:39,782 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:19:39,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:39,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:19:39,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:39,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:39,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:19:39,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:19:39,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:19:39,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:39,783 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:19:39,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:39,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:19:39,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:39,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:39,784 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:19:39,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:39,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:39,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:39,785 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:19:39,786 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:19:39,786 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_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94f95b6ef0a3c8650bd30cb1958ada590298bd1c [2020-11-28 03:19:40,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:40,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:40,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:40,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:40,043 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:40,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/../../sv-benchmarks/c/termination-15/count_up_and_down_alloca.i [2020-11-28 03:19:40,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/data/93e7e1c5b/654bc02a04b64441bbd989702a79f27a/FLAG906ff36f5 [2020-11-28 03:19:40,723 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:40,724 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/sv-benchmarks/c/termination-15/count_up_and_down_alloca.i [2020-11-28 03:19:40,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/data/93e7e1c5b/654bc02a04b64441bbd989702a79f27a/FLAG906ff36f5 [2020-11-28 03:19:41,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/data/93e7e1c5b/654bc02a04b64441bbd989702a79f27a [2020-11-28 03:19:41,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:41,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:41,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:41,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:41,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:41,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a690598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41, skipping insertion in model container [2020-11-28 03:19:41,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:41,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:41,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:41,436 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:41,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:41,538 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:41,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41 WrapperNode [2020-11-28 03:19:41,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:41,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:41,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:41,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:41,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:41,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:41,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:41,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:41,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... [2020-11-28 03:19:41,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:41,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:41,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:41,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:41,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:19:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:19:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:19:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:42,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:42,108 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:19:42,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:42 BoogieIcfgContainer [2020-11-28 03:19:42,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:42,111 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:19:42,111 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:19:42,114 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:19:42,115 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:19:42,115 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:19:41" (1/3) ... [2020-11-28 03:19:42,116 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@80a27f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:19:42, skipping insertion in model container [2020-11-28 03:19:42,117 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:19:42,117 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:41" (2/3) ... [2020-11-28 03:19:42,117 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@80a27f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:19:42, skipping insertion in model container [2020-11-28 03:19:42,117 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:19:42,117 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:42" (3/3) ... [2020-11-28 03:19:42,119 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_up_and_down_alloca.i [2020-11-28 03:19:42,173 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:19:42,173 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:19:42,173 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:19:42,174 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:42,174 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:42,174 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:19:42,174 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:42,174 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:19:42,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-28 03:19:42,207 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:19:42,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:19:42,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:19:42,213 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:19:42,213 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:19:42,214 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:19:42,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-28 03:19:42,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:19:42,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:19:42,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:19:42,217 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:19:42,218 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:19:42,224 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 [2020-11-28 03:19:42,225 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 [2020-11-28 03:19:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:42,232 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-28 03:19:42,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:42,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770604801] [2020-11-28 03:19:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:42,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:42,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:42,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2020-11-28 03:19:42,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:42,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186810533] [2020-11-28 03:19:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:42,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:42,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:42,454 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2020-11-28 03:19:42,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:42,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978486690] [2020-11-28 03:19:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:42,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:42,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:42,534 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:42,836 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-11-28 03:19:42,913 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:19:42,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:19:42,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:19:42,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:19:42,914 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:19:42,914 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:42,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:19:42,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:19:42,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration1_Lasso [2020-11-28 03:19:42,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:19:42,915 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:19:42,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:42,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:42,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:42,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:42,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,129 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-11-28 03:19:43,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:43,596 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:19:43,600 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:43,616 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 [2020-11-28 03:19:43,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:43,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:43,621 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 [2020-11-28 03:19:43,624 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:43,668 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 [2020-11-28 03:19:43,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:43,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:43,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:43,678 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:43,723 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 [2020-11-28 03:19:43,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:43,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:43,730 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 [2020-11-28 03:19:43,733 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:43,775 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 [2020-11-28 03:19:43,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:43,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:43,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:43,785 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:19:43,825 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 [2020-11-28 03:19:43,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:43,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:43,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:43,836 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:19:43,867 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 [2020-11-28 03:19:43,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:43,894 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:43,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:19:43,904 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:43,926 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 [2020-11-28 03:19:43,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,933 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:43,934 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:19:43,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:43,964 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 [2020-11-28 03:19:43,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:43,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:43,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:43,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:43,977 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:43,977 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:19:43,998 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:19:44,170 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-28 03:19:44,170 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_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:44,195 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 [2020-11-28 03:19:44,204 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:19:44,204 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:19:44,205 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 [] [2020-11-28 03:19:44,252 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-28 03:19:44,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:19:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:19:44,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:19:44,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:44,384 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 [2020-11-28 03:19:44,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-11-28 03:19:44,485 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. [2020-11-28 03:19:44,487 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 [2020-11-28 03:19:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:19:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-11-28 03:19:44,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:19:44,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:44,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-28 03:19:44,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:44,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-28 03:19:44,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:44,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 51 transitions. [2020-11-28 03:19:44,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:19:44,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 13 states and 17 transitions. [2020-11-28 03:19:44,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:19:44,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:19:44,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-11-28 03:19:44,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:19:44,507 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-28 03:19:44,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-11-28 03:19:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 03:19:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:19:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-11-28 03:19:44,532 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-28 03:19:44,532 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-28 03:19:44,532 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:19:44,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-11-28 03:19:44,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:19:44,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:19:44,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:19:44,536 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:44,536 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:19:44,536 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 [2020-11-28 03:19:44,537 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 [2020-11-28 03:19:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2020-11-28 03:19:44,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454351549] [2020-11-28 03:19:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:44,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:44,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:44,585 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2036812, now seen corresponding path program 1 times [2020-11-28 03:19:44,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208991605] [2020-11-28 03:19:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:44,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:44,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:44,604 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1386095268, now seen corresponding path program 1 times [2020-11-28 03:19:44,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087005437] [2020-11-28 03:19:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:44,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:44,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:44,631 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:44,812 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-11-28 03:19:44,911 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:19:44,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:19:44,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:19:44,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:19:44,912 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:19:44,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:44,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:19:44,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:19:44,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration2_Lasso [2020-11-28 03:19:44,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:19:44,913 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:19:44,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:44,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:45,438 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:19:45,440 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,455 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 [2020-11-28 03:19:45,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,458 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 [2020-11-28 03:19:45,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:19:45,501 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 [2020-11-28 03:19:45,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,503 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,505 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,550 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 [2020-11-28 03:19:45,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,553 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 [2020-11-28 03:19:45,555 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,596 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 [2020-11-28 03:19:45,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,601 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:45,601 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:19:45,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,645 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 [2020-11-28 03:19:45,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:45,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,687 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 [2020-11-28 03:19:45,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:45,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,716 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 [2020-11-28 03:19:45,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:45,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,748 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 [2020-11-28 03:19:45,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:45,752 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,806 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 [2020-11-28 03:19:45,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:45,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:45,809 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 [2020-11-28 03:19:45,812 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,857 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 [2020-11-28 03:19:45,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:45,862 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 [2020-11-28 03:19:45,866 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:45,917 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 [2020-11-28 03:19:45,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,922 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:45,923 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:19:45,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:45,965 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 [2020-11-28 03:19:45,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:45,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:45,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:45,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:45,982 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:45,982 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 [2020-11-28 03:19:45,998 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:19:46,041 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-11-28 03:19:46,042 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_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:19:46,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:46,051 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:19:46,051 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:19:46,052 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 [] [2020-11-28 03:19:46,095 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-28 03:19:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:19:46,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:19:46,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,159 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 [2020-11-28 03:19:46,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:19:46,179 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. [2020-11-28 03:19:46,179 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 [2020-11-28 03:19:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:19:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-11-28 03:19:46,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-28 03:19:46,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:46,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-28 03:19:46,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:46,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2020-11-28 03:19:46,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:46,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-11-28 03:19:46,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:19:46,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 17 states and 23 transitions. [2020-11-28 03:19:46,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:19:46,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:19:46,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2020-11-28 03:19:46,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:19:46,183 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-28 03:19:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2020-11-28 03:19:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-28 03:19:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:19:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-28 03:19:46,184 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-28 03:19:46,184 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-28 03:19:46,184 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:19:46,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-11-28 03:19:46,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:19:46,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:19:46,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:19:46,186 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:46,186 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:19:46,186 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 [2020-11-28 03:19:46,186 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 [2020-11-28 03:19:46,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,186 INFO L82 PathProgramCache]: Analyzing trace with hash 176705843, now seen corresponding path program 1 times [2020-11-28 03:19:46,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777187005] [2020-11-28 03:19:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 1 times [2020-11-28 03:19:46,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612159167] [2020-11-28 03:19:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,250 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1984375400, now seen corresponding path program 1 times [2020-11-28 03:19:46,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334256399] [2020-11-28 03:19:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334256399] [2020-11-28 03:19:46,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:46,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:19:46,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029481000] [2020-11-28 03:19:46,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:46,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:46,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:46,448 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-11-28 03:19:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:46,522 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-11-28 03:19:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:19:46,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2020-11-28 03:19:46,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:19:46,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 32 transitions. [2020-11-28 03:19:46,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-28 03:19:46,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 03:19:46,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 32 transitions. [2020-11-28 03:19:46,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:19:46,525 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2020-11-28 03:19:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 32 transitions. [2020-11-28 03:19:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2020-11-28 03:19:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:19:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-11-28 03:19:46,527 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-28 03:19:46,527 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-28 03:19:46,527 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:19:46,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2020-11-28 03:19:46,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:19:46,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:19:46,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:19:46,528 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:46,528 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:19:46,528 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 [2020-11-28 03:19:46,529 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 [2020-11-28 03:19:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,529 INFO L82 PathProgramCache]: Analyzing trace with hash -19280312, now seen corresponding path program 2 times [2020-11-28 03:19:46,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318474195] [2020-11-28 03:19:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318474195] [2020-11-28 03:19:46,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192045723] [2020-11-28 03:19:46,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:46,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:19:46,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:46,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:19:46,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:46,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-11-28 03:19:46,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118815780] [2020-11-28 03:19:46,773 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:19:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 2 times [2020-11-28 03:19:46,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064241695] [2020-11-28 03:19:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,791 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:46,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:46,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:46,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:19:46,829 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-28 03:19:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:46,949 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-28 03:19:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:19:46,950 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2020-11-28 03:19:46,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:19:46,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 22 transitions. [2020-11-28 03:19:46,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:19:46,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 03:19:46,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 22 transitions. [2020-11-28 03:19:46,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:19:46,953 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-28 03:19:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 22 transitions. [2020-11-28 03:19:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-28 03:19:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:19:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-28 03:19:46,954 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 03:19:46,955 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 03:19:46,955 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:19:46,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-11-28 03:19:46,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:19:46,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:19:46,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:19:46,956 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:46,956 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:19:46,956 INFO L794 eck$LassoCheckResult]: Stem: 391#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 385#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 386#L367 assume !(main_~length~0 < 1); 392#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 393#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 396#L371-3 assume !!(main_~i~0 < main_~length~0);call main_#t~mem208 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * (main_~i~0 - 1), 4);call write~int(1 + main_#t~mem208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~mem208; 394#L371-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 395#L371-3 assume !(main_~i~0 < main_~length~0); 398#L371-4 main_~j~0 := 0; 389#L374-3 assume !!(main_~j~0 < main_~length~0); 390#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 397#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 387#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 388#L374-3 assume !!(main_~j~0 < main_~length~0); 381#L375-3 [2020-11-28 03:19:46,956 INFO L796 eck$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 [2020-11-28 03:19:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash -744742010, now seen corresponding path program 1 times [2020-11-28 03:19:46,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779048957] [2020-11-28 03:19:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 3 times [2020-11-28 03:19:46,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662786177] [2020-11-28 03:19:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:46,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:46,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1562468139, now seen corresponding path program 1 times [2020-11-28 03:19:46,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629930921] [2020-11-28 03:19:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:47,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:47,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:47,036 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:47,308 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2020-11-28 03:19:47,361 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:19:47,361 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:19:47,361 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:19:47,361 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:19:47,361 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:19:47,361 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:47,361 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:19:47,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:19:47,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration5_Lasso [2020-11-28 03:19:47,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:19:47,362 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:19:47,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:19:47,770 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:19:47,771 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:47,778 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 [2020-11-28 03:19:47,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:47,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:47,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:47,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:47,802 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 [2020-11-28 03:19:47,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:47,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:47,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:47,805 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:47,826 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 [2020-11-28 03:19:47,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,830 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:47,830 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:19:47,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:47,853 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:19:47,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:47,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:47,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:47,857 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:47,878 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 [2020-11-28 03:19:47,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:47,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:47,880 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:47,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:47,902 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 [2020-11-28 03:19:47,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:47,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:47,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:47,905 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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 [2020-11-28 03:19:47,925 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 [2020-11-28 03:19:47,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:47,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:47,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:19:47,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:47,979 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 [2020-11-28 03:19:47,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:47,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:47,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:47,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:47,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:19:47,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:47,991 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:48,027 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 [2020-11-28 03:19:48,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:19:48,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:19:48,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:19:48,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:19:48,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:19:48,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:19:48,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:19:48,032 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:19:48,039 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:19:48,039 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_9d593e25-3d8e-435f-ac8a-65750e14e9c1/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) [2020-11-28 03:19:48,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:19:48,043 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:19:48,043 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:19:48,043 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 [2020-11-28 03:19:48,094 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-11-28 03:19:48,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:19:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:48,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:19:48,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:48,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:19:48,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:48,215 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 [2020-11-28 03:19:48,215 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:19:48,238 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. [2020-11-28 03:19:48,239 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 [2020-11-28 03:19:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:19:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 03:19:48,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-28 03:19:48,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:48,240 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:19:48,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:48,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:19:48,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:48,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:19:48,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:48,318 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 [2020-11-28 03:19:48,318 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:19:48,330 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. [2020-11-28 03:19:48,332 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 [2020-11-28 03:19:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:19:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 03:19:48,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-28 03:19:48,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:48,332 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:19:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:48,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:19:48,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:48,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:19:48,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:48,384 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 [2020-11-28 03:19:48,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:19:48,405 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. [2020-11-28 03:19:48,405 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 [2020-11-28 03:19:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:19:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-28 03:19:48,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-28 03:19:48,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:48,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 2 letters. [2020-11-28 03:19:48,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:48,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2020-11-28 03:19:48,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:19:48,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-11-28 03:19:48,408 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:19:48,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-11-28 03:19:48,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:19:48,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:19:48,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:19:48,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:19:48,408 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:48,409 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:48,409 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:48,409 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:19:48,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:19:48,409 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:19:48,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:19:48,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:19:48 BoogieIcfgContainer [2020-11-28 03:19:48,414 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:19:48,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:48,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:48,421 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:48,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:42" (3/4) ... [2020-11-28 03:19:48,425 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:19:48,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:48,430 INFO L168 Benchmark]: Toolchain (without parser) took 7386.34 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 75.8 MB in the beginning and 105.4 MB in the end (delta: -29.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:48,430 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 83.9 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:48,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.10 ms. Allocated memory is still 109.1 MB. Free memory was 75.6 MB in the beginning and 70.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:48,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.02 ms. Allocated memory is still 109.1 MB. Free memory was 70.4 MB in the beginning and 68.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:48,432 INFO L168 Benchmark]: Boogie Preprocessor took 20.98 ms. Allocated memory is still 109.1 MB. Free memory was 68.8 MB in the beginning and 67.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:48,432 INFO L168 Benchmark]: RCFGBuilder took 505.18 ms. Allocated memory is still 109.1 MB. Free memory was 67.2 MB in the beginning and 53.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:48,433 INFO L168 Benchmark]: BuchiAutomizer took 6302.93 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 53.6 MB in the beginning and 105.4 MB in the end (delta: -51.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:48,433 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 159.4 MB. Free memory is still 105.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:48,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 83.9 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.10 ms. Allocated memory is still 109.1 MB. Free memory was 75.6 MB in the beginning and 70.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.02 ms. Allocated memory is still 109.1 MB. Free memory was 70.4 MB in the beginning and 68.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.98 ms. Allocated memory is still 109.1 MB. Free memory was 68.8 MB in the beginning and 67.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 505.18 ms. Allocated memory is still 109.1 MB. Free memory was 67.2 MB in the beginning and 53.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6302.93 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 53.6 MB in the beginning and 105.4 MB in the end (delta: -51.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 159.4 MB. Free memory is still 105.4 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 6.2s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 5.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. 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: 39ms 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...