./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 0.1.25-f470102 [2019-12-07 16:19:59,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:19:59,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:19:59,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:19:59,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:19:59,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:19:59,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:19:59,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:19:59,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:19:59,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:19:59,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:19:59,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:19:59,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:19:59,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:19:59,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:19:59,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:19:59,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:19:59,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:19:59,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:19:59,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:19:59,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:19:59,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:19:59,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:19:59,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:19:59,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:19:59,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:19:59,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:19:59,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:19:59,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:19:59,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:19:59,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:19:59,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:19:59,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:19:59,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:19:59,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:19:59,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:19:59,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:19:59,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:19:59,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:19:59,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:19:59,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:19:59,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 16:19:59,378 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:19:59,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:19:59,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:19:59,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:19:59,379 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:19:59,379 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 16:19:59,379 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 16:19:59,379 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 16:19:59,379 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 16:19:59,379 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 16:19:59,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 16:19:59,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 16:19:59,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:19:59,381 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 16:19:59,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:19:59,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:19:59,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:19:59,382 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 16:19:59,383 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 16:19:59,383 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:19:59,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:19:59,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:19:59,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:19:59,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:19:59,493 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:19:59,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-12-07 16:19:59,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/data/df265e6ea/1b3fe02591f3452b898dbde9853d6a05/FLAG5b3cb8a8c [2019-12-07 16:19:59,881 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:19:59,881 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-12-07 16:19:59,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/data/df265e6ea/1b3fe02591f3452b898dbde9853d6a05/FLAG5b3cb8a8c [2019-12-07 16:19:59,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/data/df265e6ea/1b3fe02591f3452b898dbde9853d6a05 [2019-12-07 16:19:59,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:19:59,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:19:59,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:19:59,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:19:59,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:19:59,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:19:59" (1/1) ... [2019-12-07 16:19:59,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1718f54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:59, skipping insertion in model container [2019-12-07 16:19:59,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:19:59" (1/1) ... [2019-12-07 16:19:59,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:19:59,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:20:00,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:20:00,138 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:20:00,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:20:00,192 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:20:00,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00 WrapperNode [2019-12-07 16:20:00,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:20:00,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:20:00,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:20:00,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:20:00,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:20:00,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:20:00,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:20:00,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:20:00,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... [2019-12-07 16:20:00,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:20:00,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:20:00,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:20:00,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:20:00,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 16:20:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:20:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:20:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:20:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:20:00,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:20:00,423 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:20:00,423 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 16:20:00,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:20:00 BoogieIcfgContainer [2019-12-07 16:20:00,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:20:00,425 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 16:20:00,425 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 16:20:00,427 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 16:20:00,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:20:00,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 04:19:59" (1/3) ... [2019-12-07 16:20:00,428 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4341904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 04:20:00, skipping insertion in model container [2019-12-07 16:20:00,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:20:00,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:20:00" (2/3) ... [2019-12-07 16:20:00,428 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4341904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 04:20:00, skipping insertion in model container [2019-12-07 16:20:00,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:20:00,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:20:00" (3/3) ... [2019-12-07 16:20:00,429 INFO L371 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-1.i [2019-12-07 16:20:00,457 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 16:20:00,458 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 16:20:00,458 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 16:20:00,458 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:20:00,458 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:20:00,458 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 16:20:00,458 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:20:00,458 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 16:20:00,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-12-07 16:20:00,480 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 16:20:00,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:00,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:00,485 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 16:20:00,485 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 16:20:00,485 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 16:20:00,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-12-07 16:20:00,486 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 16:20:00,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:00,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:00,487 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 16:20:00,487 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 16:20:00,492 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L516true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 7#L516-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 18#L518true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 4#L519-3true [2019-12-07 16:20:00,492 INFO L796 eck$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 [2019-12-07 16:20:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:00,496 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-12-07 16:20:00,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:00,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280065776] [2019-12-07 16:20:00,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:00,585 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:00,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:00,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2019-12-07 16:20:00,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:00,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584623536] [2019-12-07 16:20:00,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:00,600 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:00,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:00,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2019-12-07 16:20:00,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:00,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620835203] [2019-12-07 16:20:00,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:00,628 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:00,791 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:20:00,792 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:20:00,792 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:20:00,792 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:20:00,792 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:20:00,792 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:00,792 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:20:00,792 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:20:00,793 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration1_Lasso [2019-12-07 16:20:00,793 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:20:00,793 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:20:00,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:00,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:20:01,079 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,083 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 [2019-12-07 16:20:01,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:01,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:01,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:01,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,094 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 [2019-12-07 16:20:01,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:01,099 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:01,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:01,108 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 [2019-12-07 16:20:01,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:01,114 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:01,119 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,123 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 [2019-12-07 16:20:01,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,132 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:01,132 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:01,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:20:01,182 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-12-07 16:20:01,182 INFO L444 ModelExtractionUtils]: 3 out of 22 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:01,187 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:20:01,190 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 16:20:01,190 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:20:01,190 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 [] [2019-12-07 16:20:01,202 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 16:20:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:01,239 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:20:01,240 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:01,254 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:20:01,255 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:01,275 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 [2019-12-07 16:20:01,276 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2019-12-07 16:20:01,314 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2019-12-07 16:20:01,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:20:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:20:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2019-12-07 16:20:01,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 16:20:01,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:01,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2019-12-07 16:20:01,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:01,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2019-12-07 16:20:01,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:01,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2019-12-07 16:20:01,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 16:20:01,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2019-12-07 16:20:01,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 16:20:01,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 16:20:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-12-07 16:20:01,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:20:01,327 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 16:20:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-12-07 16:20:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 16:20:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 16:20:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2019-12-07 16:20:01,345 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 16:20:01,345 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 16:20:01,345 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 16:20:01,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2019-12-07 16:20:01,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 16:20:01,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:01,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:01,346 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:20:01,346 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 16:20:01,346 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 138#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 127#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 128#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 137#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 129#L519-3 assume !(main_~i~0 < main_~length~0); 130#L519-4 main_~j~0 := 0; 136#L526-3 [2019-12-07 16:20:01,346 INFO L796 eck$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 [2019-12-07 16:20:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:01,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2019-12-07 16:20:01,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:01,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602417989] [2019-12-07 16:20:01,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:01,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602417989] [2019-12-07 16:20:01,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:20:01,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:20:01,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30376019] [2019-12-07 16:20:01,387 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:20:01,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2019-12-07 16:20:01,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:01,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362862008] [2019-12-07 16:20:01,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,396 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:01,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:20:01,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:20:01,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:20:01,422 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 16:20:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:20:01,441 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-12-07 16:20:01,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:20:01,442 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2019-12-07 16:20:01,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 16:20:01,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2019-12-07 16:20:01,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 16:20:01,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 16:20:01,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2019-12-07 16:20:01,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:20:01,444 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-07 16:20:01,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2019-12-07 16:20:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-12-07 16:20:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 16:20:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-12-07 16:20:01,445 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 16:20:01,445 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 16:20:01,445 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 16:20:01,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-12-07 16:20:01,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 16:20:01,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:01,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:01,446 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:20:01,446 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 16:20:01,447 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 [2019-12-07 16:20:01,447 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 [2019-12-07 16:20:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:01,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2019-12-07 16:20:01,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:01,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631924036] [2019-12-07 16:20:01,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,466 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:01,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:01,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2019-12-07 16:20:01,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:01,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300418478] [2019-12-07 16:20:01,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,474 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:01,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2019-12-07 16:20:01,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:01,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415677373] [2019-12-07 16:20:01,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:01,496 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:01,648 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:20:01,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:20:01,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:20:01,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:20:01,648 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:20:01,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:20:01,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:20:01,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration3_Lasso [2019-12-07 16:20:01,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:20:01,649 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:20:01,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:01,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:20:01,897 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,899 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 [2019-12-07 16:20:01,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:01,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:01,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:01,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,907 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 [2019-12-07 16:20:01,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:01,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:01,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:01,910 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:01,915 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 [2019-12-07 16:20:01,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,919 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:01,919 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:01,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,928 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 16:20:01,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:01,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:01,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:01,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:01,935 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:01,936 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:01,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:20:01,983 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2019-12-07 16:20:01,983 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:01,986 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:20:01,988 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 16:20:01,988 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:20:01,988 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2, ULTIMATE.start_main_~arr~0.offset, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2 - 1*ULTIMATE.start_main_~arr~0.offset - 4*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 16:20:01,997 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 16:20:01,999 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 16:20:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:02,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:20:02,029 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:02,033 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:20:02,033 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:02,042 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 [2019-12-07 16:20:02,042 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 16:20:02,056 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 21 states and 27 transitions. Complement of second has 6 states. [2019-12-07 16:20:02,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:20:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 16:20:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2019-12-07 16:20:02,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 16:20:02,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:02,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 16:20:02,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:02,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 16:20:02,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:02,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-12-07 16:20:02,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:20:02,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 26 transitions. [2019-12-07 16:20:02,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 16:20:02,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 16:20:02,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-12-07 16:20:02,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:20:02,062 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-12-07 16:20:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-12-07 16:20:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-12-07 16:20:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 16:20:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2019-12-07 16:20:02,064 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-12-07 16:20:02,064 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-12-07 16:20:02,064 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 16:20:02,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2019-12-07 16:20:02,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:20:02,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:02,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:02,065 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:20:02,065 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 16:20:02,065 INFO L794 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 297#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 287#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 288#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; 295#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 283#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 284#L521 assume !(main_~val~0 < 0); 298#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 300#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 285#L519-3 assume !(main_~i~0 < main_~length~0); 286#L519-4 main_~j~0 := 0; 294#L526-3 assume !!(main_~j~0 < main_~length~0); 290#L527-3 [2019-12-07 16:20:02,065 INFO L796 eck$LassoCheckResult]: Loop: 290#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 289#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; 290#L527-3 [2019-12-07 16:20:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2019-12-07 16:20:02,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:02,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836938871] [2019-12-07 16:20:02,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,086 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2019-12-07 16:20:02,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:02,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259184878] [2019-12-07 16:20:02,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,094 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2019-12-07 16:20:02,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:02,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274015289] [2019-12-07 16:20:02,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,116 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:02,240 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:20:02,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:20:02,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:20:02,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:20:02,241 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:20:02,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:20:02,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:20:02,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration4_Lasso [2019-12-07 16:20:02,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:20:02,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:20:02,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:02,519 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:20:02,519 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,523 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 [2019-12-07 16:20:02,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:02,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:02,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:02,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,530 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 [2019-12-07 16:20:02,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:02,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:02,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:02,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,536 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 [2019-12-07 16:20:02,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,539 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:02,539 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:02,541 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,545 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 [2019-12-07 16:20:02,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:02,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,547 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:02,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:02,548 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,552 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 [2019-12-07 16:20:02,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,554 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:02,554 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:02,557 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,563 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 [2019-12-07 16:20:02,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:02,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:02,565 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:02,566 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,570 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 [2019-12-07 16:20:02,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,575 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:02,575 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:02,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:02,587 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 [2019-12-07 16:20:02,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,590 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:02,590 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:02,594 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:02,598 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 [2019-12-07 16:20:02,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,601 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:02,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:02,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:02,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 16:20:02,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:02,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:02,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:02,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:02,620 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:02,620 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:02,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:20:02,633 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-12-07 16:20:02,633 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:02,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:20:02,637 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 16:20:02,638 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:20:02,638 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)_2) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2 Supporting invariants [] [2019-12-07 16:20:02,646 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 16:20:02,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:20:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:02,669 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:20:02,670 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:02,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 16:20:02,678 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:02,690 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 16:20:02,690 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-12-07 16:20:02,717 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 8 states. [2019-12-07 16:20:02,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:20:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 16:20:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-12-07 16:20:02,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 2 letters. [2019-12-07 16:20:02,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:02,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 14 letters. Loop has 2 letters. [2019-12-07 16:20:02,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:02,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 4 letters. [2019-12-07 16:20:02,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:02,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2019-12-07 16:20:02,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:20:02,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 22 states and 28 transitions. [2019-12-07 16:20:02,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 16:20:02,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 16:20:02,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2019-12-07 16:20:02,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:20:02,721 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-12-07 16:20:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2019-12-07 16:20:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-12-07 16:20:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 16:20:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-12-07 16:20:02,722 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-12-07 16:20:02,722 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-12-07 16:20:02,722 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 16:20:02,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2019-12-07 16:20:02,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:20:02,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:02,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:02,723 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:20:02,723 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 16:20:02,724 INFO L794 eck$LassoCheckResult]: Stem: 435#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 433#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; 421#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 422#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; 428#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 417#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 418#L521 assume !(main_~val~0 < 0); 434#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 436#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 419#L519-3 assume !(main_~i~0 < main_~length~0); 420#L519-4 main_~j~0 := 0; 427#L526-3 assume !!(main_~j~0 < main_~length~0); 426#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 437#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 429#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 430#L526-3 assume !!(main_~j~0 < main_~length~0); 424#L527-3 [2019-12-07 16:20:02,724 INFO L796 eck$LassoCheckResult]: Loop: 424#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 423#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; 424#L527-3 [2019-12-07 16:20:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2019-12-07 16:20:02,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:02,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225088148] [2019-12-07 16:20:02,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:02,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225088148] [2019-12-07 16:20:02,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471102160] [2019-12-07 16:20:02,795 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:20:02,820 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 16:20:02,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 16:20:02,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 16:20:02,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:02,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:20:02,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2019-12-07 16:20:02,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011145591] [2019-12-07 16:20:02,865 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:20:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2019-12-07 16:20:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:02,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383418707] [2019-12-07 16:20:02,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:02,871 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:02,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:20:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 16:20:02,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-12-07 16:20:02,888 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 10 Second operand 14 states. [2019-12-07 16:20:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:20:03,052 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-12-07 16:20:03,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 16:20:03,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2019-12-07 16:20:03,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:20:03,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 28 states and 35 transitions. [2019-12-07 16:20:03,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 16:20:03,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 16:20:03,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2019-12-07 16:20:03,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:20:03,055 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-12-07 16:20:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2019-12-07 16:20:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-12-07 16:20:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 16:20:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2019-12-07 16:20:03,057 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-12-07 16:20:03,057 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-12-07 16:20:03,057 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 16:20:03,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2019-12-07 16:20:03,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:20:03,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:20:03,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:20:03,059 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:20:03,059 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 16:20:03,059 INFO L794 eck$LassoCheckResult]: Stem: 579#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 577#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 564#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 565#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 572#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 560#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 561#L521 assume !(main_~val~0 < 0); 584#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 583#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 562#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 563#L521 assume !(main_~val~0 < 0); 578#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 580#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 581#L519-3 assume !(main_~i~0 < main_~length~0); 570#L519-4 main_~j~0 := 0; 571#L526-3 assume !!(main_~j~0 < main_~length~0); 569#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 582#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 575#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 576#L526-3 assume !!(main_~j~0 < main_~length~0); 567#L527-3 [2019-12-07 16:20:03,059 INFO L796 eck$LassoCheckResult]: Loop: 567#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 566#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; 567#L527-3 [2019-12-07 16:20:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2019-12-07 16:20:03,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:03,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007324884] [2019-12-07 16:20:03,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:03,083 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2019-12-07 16:20:03,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:03,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035824516] [2019-12-07 16:20:03,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:03,089 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2019-12-07 16:20:03,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:20:03,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077917420] [2019-12-07 16:20:03,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:20:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:20:03,121 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:20:03,277 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2019-12-07 16:20:03,321 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:20:03,321 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:20:03,321 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:20:03,321 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:20:03,321 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:20:03,322 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,322 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:20:03,322 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:20:03,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration6_Lasso [2019-12-07 16:20:03,322 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:20:03,322 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:20:03,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:20:03,540 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:20:03,540 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,544 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 [2019-12-07 16:20:03,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:03,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:03,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:03,546 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,550 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 16:20:03,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,552 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,552 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,555 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,559 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 [2019-12-07 16:20:03,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,561 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,561 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,563 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:03,569 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 [2019-12-07 16:20:03,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/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 [2019-12-07 16:20:03,580 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 [2019-12-07 16:20:03,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,583 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,583 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,585 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,590 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 16:20:03,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,593 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,593 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,596 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,600 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 [2019-12-07 16:20:03,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,604 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,608 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 [2019-12-07 16:20:03,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,610 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:20:03,610 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:20:03,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,618 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 [2019-12-07 16:20:03,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:20:03,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:20:03,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:20:03,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:20:03,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:20:03,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:20:03,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:20:03,621 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:20:03,623 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:20:03,623 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_4e99a0ab-c9dd-4e68-b8cb-d8ded41e7f21/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:20:03,625 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:20:03,625 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:20:03,626 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:20:03,626 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 [] [2019-12-07 16:20:03,635 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 16:20:03,636 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:20:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:03,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:20:03,653 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:03,657 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 16:20:03,657 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:03,666 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 [2019-12-07 16:20:03,666 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 16:20:03,677 INFO L76 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. [2019-12-07 16:20:03,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:20:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:20:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 16:20:03,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-12-07 16:20:03,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:03,678 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 16:20:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:03,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:20:03,697 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:03,701 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 16:20:03,701 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:03,709 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 [2019-12-07 16:20:03,710 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 16:20:03,719 INFO L76 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. [2019-12-07 16:20:03,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:20:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:20:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 16:20:03,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-12-07 16:20:03,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:03,720 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 16:20:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:20:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:03,737 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:20:03,738 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:20:03,743 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 16:20:03,743 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:20:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:20:03,751 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 [2019-12-07 16:20:03,751 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 16:20:03,762 INFO L76 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. [2019-12-07 16:20:03,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:20:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:20:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-12-07 16:20:03,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2019-12-07 16:20:03,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:03,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2019-12-07 16:20:03,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:03,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2019-12-07 16:20:03,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:20:03,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2019-12-07 16:20:03,765 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 16:20:03,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-12-07 16:20:03,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 16:20:03,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 16:20:03,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 16:20:03,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:20:03,765 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:20:03,766 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:20:03,766 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:20:03,766 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 16:20:03,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:20:03,766 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 16:20:03,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 16:20:03,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 04:20:03 BoogieIcfgContainer [2019-12-07 16:20:03,770 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 16:20:03,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:20:03,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:20:03,770 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:20:03,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:20:00" (3/4) ... [2019-12-07 16:20:03,773 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:20:03,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:20:03,774 INFO L168 Benchmark]: Toolchain (without parser) took 3871.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 939.3 MB in the beginning and 849.8 MB in the end (delta: 89.5 MB). Peak memory consumption was 256.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:20:03,774 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:20:03,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:20:03,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:20:03,776 INFO L168 Benchmark]: Boogie Preprocessor took 17.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:20:03,776 INFO L168 Benchmark]: RCFGBuilder took 185.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:20:03,777 INFO L168 Benchmark]: BuchiAutomizer took 3345.47 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 849.8 MB in the end (delta: 217.9 MB). Peak memory consumption was 277.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:20:03,777 INFO L168 Benchmark]: Witness Printer took 2.74 ms. Allocated memory is still 1.2 GB. Free memory is still 849.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:20:03,780 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 185.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3345.47 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 849.8 MB in the end (delta: 217.9 MB). Peak memory consumption was 277.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.74 ms. Allocated memory is still 1.2 GB. Free memory is still 849.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - 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 6 terminating modules (2 trivial, 3 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 unknown-#length-unknown[arr] + -1 * arr + -4 * j and consists of 4 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr] and consists of 5 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 109 SDtfs, 223 SDslu, 84 SDs, 0 SdLazy, 192 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital133 mio100 ax113 hnf98 lsp82 ukn79 mio100 lsp57 div100 bol100 ite100 ukn100 eq160 hnf90 smp93 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms 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...