./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e28603c63113c1566dc2e06da17c63059f80486 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:24:08,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:24:08,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:24:08,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:24:08,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:24:08,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:24:08,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:24:08,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:24:08,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:24:08,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:24:08,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:24:08,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:24:08,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:24:08,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:24:08,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:24:08,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:24:08,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:24:08,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:24:08,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:24:08,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:24:08,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:24:08,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:24:08,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:24:08,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:24:08,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:24:08,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:24:08,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:24:08,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:24:08,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:24:08,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:24:08,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:24:08,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:24:08,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:24:08,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:24:08,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:24:08,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:24:08,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:24:08,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:24:08,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:24:08,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:24:08,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:24:08,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:24:08,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:24:08,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:24:08,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:24:08,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:24:08,196 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:24:08,196 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:24:08,196 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:24:08,197 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:24:08,197 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:24:08,197 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:24:08,198 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:24:08,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:24:08,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:24:08,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:24:08,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:24:08,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:24:08,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:24:08,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:24:08,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:24:08,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:24:08,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:24:08,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:24:08,201 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:24:08,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:24:08,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:24:08,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:24:08,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:24:08,203 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:24:08,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:24:08,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:24:08,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:24:08,205 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:24:08,207 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:24:08,207 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_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e28603c63113c1566dc2e06da17c63059f80486 [2020-11-29 22:24:08,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:24:08,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:24:08,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:24:08,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:24:08,508 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:24:08,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-11-29 22:24:08,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/data/eb0ae25bc/9726773fea284883b6e0fffb397dd33a/FLAG75a497636 [2020-11-29 22:24:09,183 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:24:09,183 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-11-29 22:24:09,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/data/eb0ae25bc/9726773fea284883b6e0fffb397dd33a/FLAG75a497636 [2020-11-29 22:24:09,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/data/eb0ae25bc/9726773fea284883b6e0fffb397dd33a [2020-11-29 22:24:09,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:24:09,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:24:09,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:24:09,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:24:09,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:24:09,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:09,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b52c9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09, skipping insertion in model container [2020-11-29 22:24:09,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:09,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:24:09,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:24:09,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:24:09,862 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:24:09,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:24:09,950 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:24:09,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09 WrapperNode [2020-11-29 22:24:09,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:24:09,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:24:09,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:24:09,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:24:09,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:09,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:09,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:24:09,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:24:09,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:24:09,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:24:10,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... [2020-11-29 22:24:10,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:24:10,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:24:10,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:24:10,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:24:10,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:24:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:24:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:24:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:24:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:24:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:24:10,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:24:10,422 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 22:24:10,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:24:10 BoogieIcfgContainer [2020-11-29 22:24:10,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:24:10,428 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:24:10,429 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:24:10,432 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:24:10,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:24:10,433 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:24:09" (1/3) ... [2020-11-29 22:24:10,434 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20b182e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:24:10, skipping insertion in model container [2020-11-29 22:24:10,447 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:24:10,447 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:24:09" (2/3) ... [2020-11-29 22:24:10,448 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20b182e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:24:10, skipping insertion in model container [2020-11-29 22:24:10,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:24:10,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:24:10" (3/3) ... [2020-11-29 22:24:10,457 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-1.i [2020-11-29 22:24:10,514 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:24:10,514 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:24:10,515 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:24:10,515 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:24:10,515 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:24:10,515 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:24:10,515 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:24:10,516 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:24:10,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-29 22:24:10,549 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 22:24:10,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:10,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:10,556 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:24:10,557 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 22:24:10,557 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:24:10,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-29 22:24:10,560 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 22:24:10,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:10,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:10,561 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:24:10,561 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 22:24:10,567 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L516true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 7#L516-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 18#L518true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 4#L519-3true [2020-11-29 22:24:10,567 INFO L796 eck$LassoCheckResult]: Loop: 4#L519-3true assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 13#L521true assume main_~val~0 < 0;main_~val~0 := 0; 16#L521-2true call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 20#L519-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4#L519-3true [2020-11-29 22:24:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:10,573 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-29 22:24:10,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:10,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695294749] [2020-11-29 22:24:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:10,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:10,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:10,756 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2020-11-29 22:24:10,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:10,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852584257] [2020-11-29 22:24:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:10,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:10,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:10,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:10,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2020-11-29 22:24:10,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:10,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219602346] [2020-11-29 22:24:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:10,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:10,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:10,908 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:11,205 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-29 22:24:11,260 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:24:11,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:24:11,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:24:11,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:24:11,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:24:11,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:11,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:24:11,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:24:11,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration1_Lasso [2020-11-29 22:24:11,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:24:11,264 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:24:11,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:11,902 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:24:11,907 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:11,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:11,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:11,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:11,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:11,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:11,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:11,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:11,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:11,949 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:11,993 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:11,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:11,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:11,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:11,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:11,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:11,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:11,997 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,002 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:12,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:12,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:12,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:12,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:12,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:12,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:12,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:12,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:12,064 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:12,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:12,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:12,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:12,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:12,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:12,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:12,087 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,115 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:12,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:12,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:12,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:12,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:12,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:12,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:12,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:12,122 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:12,170 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:12,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:12,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:12,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:12,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:12,181 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:12,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,190 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:12,231 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:12,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:12,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:12,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:12,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:12,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:12,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:12,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:12,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:12,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:12,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:12,310 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:12,310 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:12,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:24:12,533 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-11-29 22:24:12,534 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:12,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:12,549 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:24:12,550 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:24:12,550 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-29 22:24:12,596 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 22:24:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:12,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:24:12,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:12,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:24:12,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:12,682 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:24:12,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-11-29 22:24:12,791 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2020-11-29 22:24:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:24:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:24:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-11-29 22:24:12,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 22:24:12,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:12,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-29 22:24:12,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:12,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2020-11-29 22:24:12,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:12,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2020-11-29 22:24:12,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 22:24:12,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2020-11-29 22:24:12,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 22:24:12,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 22:24:12,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-11-29 22:24:12,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:24:12,822 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-29 22:24:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-11-29 22:24:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 22:24:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:24:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-11-29 22:24:12,845 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-29 22:24:12,845 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-29 22:24:12,845 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:24:12,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-11-29 22:24:12,846 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 22:24:12,846 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:12,846 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:12,847 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:12,847 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 22:24:12,847 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 138#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 127#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 128#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 137#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 129#L519-3 assume !(main_~i~0 < main_~length~0); 130#L519-4 main_~j~0 := 0; 136#L526-3 [2020-11-29 22:24:12,847 INFO L796 eck$LassoCheckResult]: Loop: 136#L526-3 assume !!(main_~j~0 < main_~length~0); 135#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 133#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 134#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 136#L526-3 [2020-11-29 22:24:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:12,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2020-11-29 22:24:12,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:12,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344132299] [2020-11-29 22:24:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:12,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344132299] [2020-11-29 22:24:12,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:24:12,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:24:12,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444543772] [2020-11-29 22:24:12,955 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:24:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:12,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2020-11-29 22:24:12,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:12,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093783223] [2020-11-29 22:24:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:12,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:12,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:12,989 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:13,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:24:13,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:24:13,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:24:13,032 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-29 22:24:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:24:13,069 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-29 22:24:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:24:13,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-11-29 22:24:13,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 22:24:13,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2020-11-29 22:24:13,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-29 22:24:13,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 22:24:13,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-11-29 22:24:13,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:24:13,072 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-29 22:24:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-11-29 22:24:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-11-29 22:24:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:24:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-29 22:24:13,074 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-29 22:24:13,074 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-29 22:24:13,074 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:24:13,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-11-29 22:24:13,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 22:24:13,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:13,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:13,075 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:13,075 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 22:24:13,076 INFO L794 eck$LassoCheckResult]: Stem: 180#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 178#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 167#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 168#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 177#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 169#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 170#L521 assume !(main_~val~0 < 0); 179#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 181#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 171#L519-3 assume !(main_~i~0 < main_~length~0); 172#L519-4 main_~j~0 := 0; 176#L526-3 [2020-11-29 22:24:13,076 INFO L796 eck$LassoCheckResult]: Loop: 176#L526-3 assume !!(main_~j~0 < main_~length~0); 175#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 173#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 174#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 176#L526-3 [2020-11-29 22:24:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2020-11-29 22:24:13,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:13,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447647105] [2020-11-29 22:24:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:13,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:13,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:13,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:13,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2020-11-29 22:24:13,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:13,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322540380] [2020-11-29 22:24:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:13,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:13,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:13,137 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:13,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2020-11-29 22:24:13,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:13,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75552893] [2020-11-29 22:24:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:13,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:13,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:13,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:13,399 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-11-29 22:24:13,474 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:24:13,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:24:13,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:24:13,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:24:13,475 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:24:13,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:13,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:24:13,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:24:13,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration3_Lasso [2020-11-29 22:24:13,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:24:13,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:24:13,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,627 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-11-29 22:24:13,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:13,943 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:24:13,944 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:13,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:13,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:13,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:13,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:13,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:13,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:13,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:13,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:13,959 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:13,997 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:14,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:14,003 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 [2020-11-29 22:24:14,005 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:14,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,051 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:14,052 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,057 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:14,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:14,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:14,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,098 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:14,139 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:14,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,149 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:14,190 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,196 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:14,196 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:14,243 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:14,269 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:14,280 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:14,324 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,329 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:14,329 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:14,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:14,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:14,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:14,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:14,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:14,390 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:14,391 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,403 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:24:14,453 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-11-29 22:24:14,453 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:24:14,459 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:24:14,459 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:24:14,459 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-29 22:24:14,487 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 22:24:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:14,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:24:14,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:14,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:24:14,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:14,546 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:24:14,547 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 22:24:14,576 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 20 states and 26 transitions. Complement of second has 4 states. [2020-11-29 22:24:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:24:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:24:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-11-29 22:24:14,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 22:24:14,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:14,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 22:24:14,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:14,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-29 22:24:14,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:14,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2020-11-29 22:24:14,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:14,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 25 transitions. [2020-11-29 22:24:14,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 22:24:14,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 22:24:14,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-11-29 22:24:14,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:24:14,581 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-29 22:24:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-11-29 22:24:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-29 22:24:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 22:24:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-11-29 22:24:14,583 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-11-29 22:24:14,583 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-11-29 22:24:14,583 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:24:14,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-11-29 22:24:14,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:14,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:14,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:14,585 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:14,585 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:24:14,585 INFO L794 eck$LassoCheckResult]: Stem: 295#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 293#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 283#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 284#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 291#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 279#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 280#L521 assume !(main_~val~0 < 0); 294#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 296#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 281#L519-3 assume !(main_~i~0 < main_~length~0); 282#L519-4 main_~j~0 := 0; 290#L526-3 assume !!(main_~j~0 < main_~length~0); 286#L527-3 [2020-11-29 22:24:14,585 INFO L796 eck$LassoCheckResult]: Loop: 286#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 285#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 286#L527-3 [2020-11-29 22:24:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:14,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2020-11-29 22:24:14,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:14,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466922516] [2020-11-29 22:24:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:14,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:14,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:14,631 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:14,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:14,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2020-11-29 22:24:14,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:14,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045399754] [2020-11-29 22:24:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:14,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:14,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:14,642 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:14,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:14,642 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2020-11-29 22:24:14,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:14,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87838289] [2020-11-29 22:24:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:14,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:14,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:14,671 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:14,873 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-29 22:24:14,975 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:24:14,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:24:14,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:24:14,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:24:14,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:24:14,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:14,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:24:14,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:24:14,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration4_Lasso [2020-11-29 22:24:14,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:24:14,976 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:24:14,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:14,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:14,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:14,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:14,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:14,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,163 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-29 22:24:15,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:15,505 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:24:15,505 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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 [2020-11-29 22:24:15,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:15,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,517 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:15,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:15,518 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:15,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:15,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:15,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:15,604 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:15,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:15,621 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:15,659 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:15,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:15,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,662 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:15,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,702 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:15,702 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,706 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:15,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:15,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:15,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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 [2020-11-29 22:24:15,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,780 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:15,780 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:15,782 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,809 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:15,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:15,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:15,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:15,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:15,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:15,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:15,823 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:24:15,839 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-29 22:24:15,839 INFO L444 ModelExtractionUtils]: 2 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:15,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:15,843 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:24:15,843 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:24:15,843 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1 Supporting invariants [] [2020-11-29 22:24:15,882 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-29 22:24:15,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 22:24:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:15,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:24:15,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:15,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:24:15,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:16,014 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-29 22:24:16,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-11-29 22:24:16,114 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 39 states and 51 transitions. Complement of second has 11 states. [2020-11-29 22:24:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-29 22:24:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 22:24:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-11-29 22:24:16,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-29 22:24:16,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:16,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-29 22:24:16,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:16,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-29 22:24:16,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:16,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-11-29 22:24:16,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:16,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 44 transitions. [2020-11-29 22:24:16,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 22:24:16,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 22:24:16,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-11-29 22:24:16,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:24:16,120 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-11-29 22:24:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-11-29 22:24:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-11-29 22:24:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 22:24:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-11-29 22:24:16,123 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-29 22:24:16,123 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-29 22:24:16,123 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 22:24:16,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2020-11-29 22:24:16,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:16,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:16,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:16,125 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:16,125 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:24:16,125 INFO L794 eck$LassoCheckResult]: Stem: 457#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 455#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 442#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 443#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 449#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 437#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 438#L521 assume !(main_~val~0 < 0); 458#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 459#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 460#L519-3 assume !(main_~i~0 < main_~length~0); 461#L519-4 main_~j~0 := 0; 454#L526-3 assume !!(main_~j~0 < main_~length~0); 447#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 463#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 452#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 453#L526-3 assume !!(main_~j~0 < main_~length~0); 445#L527-3 [2020-11-29 22:24:16,125 INFO L796 eck$LassoCheckResult]: Loop: 445#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 444#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 445#L527-3 [2020-11-29 22:24:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2020-11-29 22:24:16,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553272385] [2020-11-29 22:24:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:16,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553272385] [2020-11-29 22:24:16,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665289122] [2020-11-29 22:24:16,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:24:16,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:24:16,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:24:16,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:24:16,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:16,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:24:16,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-29 22:24:16,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129315277] [2020-11-29 22:24:16,305 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:24:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2020-11-29 22:24:16,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20689220] [2020-11-29 22:24:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,321 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:16,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:24:16,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:24:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:24:16,390 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 10 states. [2020-11-29 22:24:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:24:16,510 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-11-29 22:24:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:24:16,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2020-11-29 22:24:16,512 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:24:16,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 40 states and 51 transitions. [2020-11-29 22:24:16,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 22:24:16,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 22:24:16,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-11-29 22:24:16,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:24:16,513 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 22:24:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-11-29 22:24:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-11-29 22:24:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 22:24:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-29 22:24:16,517 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 22:24:16,517 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 22:24:16,517 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 22:24:16,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-29 22:24:16,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:16,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:16,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:16,519 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:16,519 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:24:16,519 INFO L794 eck$LassoCheckResult]: Stem: 599#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 597#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 581#L516 assume main_~length~0 < 1 || main_~length~0 >= 536870911;main_~length~0 := 1; 582#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 615#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 584#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 585#L521 assume !(main_~val~0 < 0); 613#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 602#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 603#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 607#L521 assume !(main_~val~0 < 0); 610#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 609#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 606#L519-3 assume !(main_~i~0 < main_~length~0); 593#L519-4 main_~j~0 := 0; 594#L526-3 assume !!(main_~j~0 < main_~length~0); 589#L527-3 [2020-11-29 22:24:16,520 INFO L796 eck$LassoCheckResult]: Loop: 589#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 588#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 589#L527-3 [2020-11-29 22:24:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,520 INFO L82 PathProgramCache]: Analyzing trace with hash -420071865, now seen corresponding path program 1 times [2020-11-29 22:24:16,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297096566] [2020-11-29 22:24:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:16,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297096566] [2020-11-29 22:24:16,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682737008] [2020-11-29 22:24:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:24:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:16,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:24:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:16,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:24:16,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-11-29 22:24:16,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004298530] [2020-11-29 22:24:16,651 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:24:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2020-11-29 22:24:16,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205013244] [2020-11-29 22:24:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,659 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:16,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:24:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:24:16,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:24:16,687 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand 5 states. [2020-11-29 22:24:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:24:16,716 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-11-29 22:24:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:24:16,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-11-29 22:24:16,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:16,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 28 transitions. [2020-11-29 22:24:16,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 22:24:16,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 22:24:16,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2020-11-29 22:24:16,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:24:16,719 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-29 22:24:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2020-11-29 22:24:16,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 22:24:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 22:24:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-11-29 22:24:16,721 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-29 22:24:16,721 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-29 22:24:16,721 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 22:24:16,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-11-29 22:24:16,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:16,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:16,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:16,722 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:16,722 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:24:16,723 INFO L794 eck$LassoCheckResult]: Stem: 717#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 715#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 700#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 701#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 713#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 702#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 703#L521 assume !(main_~val~0 < 0); 716#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 718#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 704#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 705#L521 assume !(main_~val~0 < 0); 721#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 720#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 719#L519-3 assume !(main_~i~0 < main_~length~0); 711#L519-4 main_~j~0 := 0; 712#L526-3 assume !!(main_~j~0 < main_~length~0); 707#L527-3 [2020-11-29 22:24:16,723 INFO L796 eck$LassoCheckResult]: Loop: 707#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 706#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 707#L527-3 [2020-11-29 22:24:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1431189115, now seen corresponding path program 2 times [2020-11-29 22:24:16,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465778595] [2020-11-29 22:24:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 4 times [2020-11-29 22:24:16,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35030151] [2020-11-29 22:24:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,753 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash -983203254, now seen corresponding path program 2 times [2020-11-29 22:24:16,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:16,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939908110] [2020-11-29 22:24:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:16,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:16,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:17,096 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-11-29 22:24:17,176 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:24:17,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:24:17,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:24:17,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:24:17,176 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:24:17,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:24:17,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:24:17,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration7_Lasso [2020-11-29 22:24:17,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:24:17,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:24:17,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:17,627 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:24:17,627 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:17,636 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:17,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:17,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,641 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/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) [2020-11-29 22:24:17,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:17,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:17,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:17,693 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:17,731 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:17,735 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,738 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:17,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:17,779 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:17,830 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:17,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:17,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,837 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:17,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:17,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:17,890 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,914 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:17,914 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:17,916 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,944 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:17,944 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:17,949 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:17,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:17,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:17,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:17,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:17,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:17,979 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:17,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:18,001 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:18,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:18,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:18,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:18,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:18,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:18,036 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:18,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:18,039 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:18,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:18,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:18,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:18,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:18,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:18,070 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:18,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:18,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:18,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:18,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:18,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:18,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:18,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:18,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:18,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:18,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:18,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:24:18,126 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:24:18,126 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_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:18,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:24:18,130 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:24:18,130 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:24:18,130 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:18,182 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 22:24:18,185 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 22:24:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:18,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:24:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:18,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:24:18,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:18,286 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:24:18,286 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 22:24:18,322 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 7 states. [2020-11-29 22:24:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:24:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:24:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-29 22:24:18,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2020-11-29 22:24:18,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:18,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2020-11-29 22:24:18,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:18,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-29 22:24:18,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:18,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-29 22:24:18,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:18,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2020-11-29 22:24:18,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 22:24:18,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 22:24:18,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2020-11-29 22:24:18,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:24:18,326 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-29 22:24:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2020-11-29 22:24:18,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-29 22:24:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 22:24:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-11-29 22:24:18,328 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-11-29 22:24:18,328 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-11-29 22:24:18,328 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 22:24:18,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2020-11-29 22:24:18,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:24:18,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:24:18,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:24:18,334 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:24:18,335 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:24:18,335 INFO L794 eck$LassoCheckResult]: Stem: 862#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 860#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 843#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 844#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 855#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 845#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 846#L521 assume !(main_~val~0 < 0); 861#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 866#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 847#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 848#L521 assume !(main_~val~0 < 0); 863#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 864#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 865#L519-3 assume !(main_~i~0 < main_~length~0); 853#L519-4 main_~j~0 := 0; 854#L526-3 assume !!(main_~j~0 < main_~length~0); 852#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 867#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 856#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 857#L526-3 assume !!(main_~j~0 < main_~length~0); 850#L527-3 [2020-11-29 22:24:18,337 INFO L796 eck$LassoCheckResult]: Loop: 850#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 849#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 850#L527-3 [2020-11-29 22:24:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:18,337 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2020-11-29 22:24:18,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:18,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853177974] [2020-11-29 22:24:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:18,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:18,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:18,380 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:18,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 5 times [2020-11-29 22:24:18,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:18,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135193372] [2020-11-29 22:24:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:18,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:18,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:18,397 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2020-11-29 22:24:18,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:24:18,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456911620] [2020-11-29 22:24:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:24:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:18,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:24:18,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:24:18,448 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:24:18,783 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-11-29 22:24:18,839 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:24:18,839 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:24:18,839 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:24:18,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:24:18,839 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:24:18,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:18,840 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:24:18,840 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:24:18,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration8_Lasso [2020-11-29 22:24:18,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:24:18,840 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:24:18,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:18,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:19,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:19,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:24:19,238 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:24:19,239 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:19,253 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:19,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:19,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,260 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,292 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:19,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:19,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:19,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:19,317 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,317 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:19,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:19,327 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,351 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:19,351 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:19,354 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,376 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:19,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:19,405 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,441 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:19,441 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:24:19,445 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:24:19,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:24:19,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,495 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:24:19,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:24:19,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:24:19,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:24:19,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:24:19,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:24:19,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:24:19,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:24:19,520 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:24:19,522 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:24:19,522 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_8eb7ca79-589e-4a30-b8e2-cb1a72d7e91b/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:24:19,524 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:24:19,524 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:24:19,524 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:24:19,524 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4 Supporting invariants [] [2020-11-29 22:24:19,550 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-11-29 22:24:19,551 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 22:24:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:19,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:24:19,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:19,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:24:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:19,597 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:24:19,597 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-29 22:24:19,643 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-11-29 22:24:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:24:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:24:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-29 22:24:19,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-11-29 22:24:19,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:19,648 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:24:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:19,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:24:19,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:19,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:24:19,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:19,719 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:24:19,719 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-29 22:24:19,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-11-29 22:24:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:24:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:24:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-29 22:24:19,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-11-29 22:24:19,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:19,735 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:24:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:24:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:19,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:24:19,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:24:19,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:24:19,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:24:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:24:19,806 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:24:19,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-29 22:24:19,825 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2020-11-29 22:24:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:24:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:24:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-11-29 22:24:19,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2020-11-29 22:24:19,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:19,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2020-11-29 22:24:19,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:19,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2020-11-29 22:24:19,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:24:19,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-29 22:24:19,828 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:24:19,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-29 22:24:19,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:24:19,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:24:19,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:24:19,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:24:19,829 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:24:19,829 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:24:19,829 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:24:19,829 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 22:24:19,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:24:19,829 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:24:19,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:24:19,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:24:19 BoogieIcfgContainer [2020-11-29 22:24:19,834 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:24:19,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:24:19,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:24:19,835 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:24:19,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:24:10" (3/4) ... [2020-11-29 22:24:19,840 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:24:19,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:24:19,841 INFO L168 Benchmark]: Toolchain (without parser) took 10341.83 ms. Allocated memory was 86.0 MB in the beginning and 159.4 MB in the end (delta: 73.4 MB). Free memory was 51.8 MB in the beginning and 51.9 MB in the end (delta: -96.5 kB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:19,841 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 56.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:24:19,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.62 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 53.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:19,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.67 ms. Allocated memory is still 86.0 MB. Free memory was 53.2 MB in the beginning and 51.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:19,843 INFO L168 Benchmark]: Boogie Preprocessor took 37.82 ms. Allocated memory is still 86.0 MB. Free memory was 51.4 MB in the beginning and 50.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:24:19,843 INFO L168 Benchmark]: RCFGBuilder took 388.69 ms. Allocated memory is still 86.0 MB. Free memory was 50.4 MB in the beginning and 36.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:19,844 INFO L168 Benchmark]: BuchiAutomizer took 9405.95 ms. Allocated memory was 86.0 MB in the beginning and 159.4 MB in the end (delta: 73.4 MB). Free memory was 35.7 MB in the beginning and 51.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:24:19,844 INFO L168 Benchmark]: Witness Printer took 5.40 ms. Allocated memory is still 159.4 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:24:19,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 56.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.62 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 53.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.67 ms. Allocated memory is still 86.0 MB. Free memory was 53.2 MB in the beginning and 51.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.82 ms. Allocated memory is still 86.0 MB. Free memory was 51.4 MB in the beginning and 50.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 388.69 ms. Allocated memory is still 86.0 MB. Free memory was 50.4 MB in the beginning and 36.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9405.95 ms. Allocated memory was 86.0 MB in the beginning and 159.4 MB in the end (delta: 73.4 MB). Free memory was 35.7 MB in the beginning and 51.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.40 ms. Allocated memory is still 159.4 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr + i * 4 + -4] and consists of 8 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.3s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 8.0s. Construction of modules took 0.3s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 135 SDtfs, 195 SDslu, 110 SDs, 0 SdLazy, 204 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU3 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital141 mio100 ax112 hnf97 lsp83 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq155 hnf90 smp86 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...