./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array15_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array15_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73a986a1d92244ec74fbbfc5c06684e9b6828bb2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:20:31,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:20:31,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:20:31,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:20:31,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:20:31,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:20:31,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:20:31,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:20:31,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:20:31,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:20:31,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:20:31,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:20:31,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:20:31,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:20:31,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:20:31,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:20:31,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:20:31,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:20:31,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:20:31,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:20:31,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:20:31,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:20:31,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:20:31,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:20:31,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:20:31,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:20:31,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:20:31,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:20:31,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:20:31,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:20:31,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:20:31,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:20:31,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:20:31,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:20:31,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:20:31,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:20:31,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:20:31,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:20:31,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:20:31,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:20:31,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:20:31,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 18:20:31,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:20:31,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:20:31,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:20:31,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:20:31,326 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:20:31,326 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:20:31,326 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:20:31,327 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:20:31,327 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:20:31,327 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:20:31,329 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:20:31,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:20:31,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:20:31,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:20:31,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:20:31,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:20:31,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:20:31,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:20:31,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:20:31,330 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:20:31,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:20:31,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:20:31,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:20:31,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:20:31,331 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:20:31,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:20:31,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:20:31,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:20:31,331 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:20:31,333 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:20:31,333 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73a986a1d92244ec74fbbfc5c06684e9b6828bb2 [2020-11-29 18:20:31,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:20:31,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:20:31,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:20:31,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:20:31,707 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:20:31,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/../../sv-benchmarks/c/termination-15/array15_alloca.i [2020-11-29 18:20:31,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/data/4c739e9a2/e79f958454f94f16a07eeb382b809de0/FLAG4829f1282 [2020-11-29 18:20:32,372 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:20:32,373 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/sv-benchmarks/c/termination-15/array15_alloca.i [2020-11-29 18:20:32,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/data/4c739e9a2/e79f958454f94f16a07eeb382b809de0/FLAG4829f1282 [2020-11-29 18:20:32,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/data/4c739e9a2/e79f958454f94f16a07eeb382b809de0 [2020-11-29 18:20:32,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:20:32,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:20:32,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:20:32,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:20:32,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:20:32,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:20:32" (1/1) ... [2020-11-29 18:20:32,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22df58b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:32, skipping insertion in model container [2020-11-29 18:20:32,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:20:32" (1/1) ... [2020-11-29 18:20:32,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:20:32,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:20:33,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:20:33,203 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:20:33,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:20:33,322 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:20:33,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33 WrapperNode [2020-11-29 18:20:33,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:20:33,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:20:33,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:20:33,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:20:33,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:20:33,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:20:33,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:20:33,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:20:33,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... [2020-11-29 18:20:33,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:20:33,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:20:33,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:20:33,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:20:33,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:20:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:20:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:20:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:20:33,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:20:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:20:33,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:20:33,814 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 18:20:33,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:20:33 BoogieIcfgContainer [2020-11-29 18:20:33,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:20:33,817 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:20:33,818 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:20:33,822 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:20:33,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:20:33,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:20:32" (1/3) ... [2020-11-29 18:20:33,826 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@381b83d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:20:33, skipping insertion in model container [2020-11-29 18:20:33,837 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:20:33,838 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:33" (2/3) ... [2020-11-29 18:20:33,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@381b83d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:20:33, skipping insertion in model container [2020-11-29 18:20:33,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:20:33,839 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:20:33" (3/3) ... [2020-11-29 18:20:33,840 INFO L373 chiAutomizerObserver]: Analyzing ICFG array15_alloca.i [2020-11-29 18:20:33,919 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:20:33,919 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:20:33,920 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:20:33,920 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:20:33,920 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:20:33,920 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:20:33,920 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:20:33,921 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:20:33,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-29 18:20:33,958 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 18:20:33,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:33,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:33,991 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 18:20:33,991 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:20:33,992 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:20:33,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-29 18:20:33,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 18:20:33,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:33,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:33,995 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 18:20:33,995 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:20:34,003 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 16#L367true assume !(main_~length~0 < 1); 5#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 12#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 17#L370-3true [2020-11-29 18:20:34,004 INFO L796 eck$LassoCheckResult]: Loop: 17#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 9#L372true assume main_#t~mem209 < 0;havoc main_#t~mem209;call write~int(0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 14#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 17#L370-3true [2020-11-29 18:20:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-29 18:20:34,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:34,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578868051] [2020-11-29 18:20:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:34,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:34,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:34,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:34,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2020-11-29 18:20:34,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:34,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378989907] [2020-11-29 18:20:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:34,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:34,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:34,263 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:34,269 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2020-11-29 18:20:34,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:34,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146760343] [2020-11-29 18:20:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:34,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:34,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:34,313 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:34,627 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:20:34,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:20:34,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:20:34,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:20:34,629 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:20:34,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:34,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:20:34,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:20:34,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: array15_alloca.i_Iteration1_Lasso [2020-11-29 18:20:34,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:20:34,631 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:20:34,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:34,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:35,215 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:20:35,222 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:35,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:35,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:35,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,290 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:35,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:35,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:35,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:35,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:35,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:35,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:35,385 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:35,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:35,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,391 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:35,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:35,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:35,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:35,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:35,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,538 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:35,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:35,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:35,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:35,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:35,553 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:35,553 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:35,568 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:20:35,609 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-29 18:20:35,609 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:35,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:20:35,642 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:20:35,642 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:20:35,643 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-29 18:20:35,709 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 18:20:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:35,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:20:35,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:35,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:20:35,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:36,002 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 18:20:36,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-11-29 18:20:36,074 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 35 states and 50 transitions. Complement of second has 7 states. [2020-11-29 18:20:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 18:20:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:20:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2020-11-29 18:20:36,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 18:20:36,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:36,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 18:20:36,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:36,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-29 18:20:36,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:36,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2020-11-29 18:20:36,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:36,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2020-11-29 18:20:36,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 18:20:36,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 18:20:36,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-11-29 18:20:36,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:20:36,093 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 18:20:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-11-29 18:20:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 18:20:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 18:20:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-11-29 18:20:36,121 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 18:20:36,121 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 18:20:36,121 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:20:36,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2020-11-29 18:20:36,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:36,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:36,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:36,123 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:20:36,123 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:20:36,124 INFO L794 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 113#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 114#L367 assume !(main_~length~0 < 1); 121#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 122#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 123#L370-3 assume !(main_~i~0 < main_~length~0); 117#L370-4 main_~j~0 := 0; 118#L378-2 [2020-11-29 18:20:36,124 INFO L796 eck$LassoCheckResult]: Loop: 118#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 120#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 118#L378-2 [2020-11-29 18:20:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2020-11-29 18:20:36,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:36,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679175801] [2020-11-29 18:20:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:36,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679175801] [2020-11-29 18:20:36,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:20:36,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:20:36,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495070542] [2020-11-29 18:20:36,184 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:20:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:36,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2020-11-29 18:20:36,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:36,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200150988] [2020-11-29 18:20:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,201 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:36,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:20:36,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:20:36,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:20:36,287 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-29 18:20:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:20:36,342 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-11-29 18:20:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:20:36,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2020-11-29 18:20:36,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:36,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2020-11-29 18:20:36,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-29 18:20:36,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 18:20:36,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2020-11-29 18:20:36,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:20:36,348 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-11-29 18:20:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2020-11-29 18:20:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-11-29 18:20:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 18:20:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-11-29 18:20:36,350 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 18:20:36,351 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 18:20:36,351 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:20:36,351 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-11-29 18:20:36,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:36,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:36,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:36,357 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:20:36,357 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:20:36,358 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 146#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 147#L367 assume !(main_~length~0 < 1); 154#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 155#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 156#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 148#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 149#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 157#L370-3 assume !(main_~i~0 < main_~length~0); 150#L370-4 main_~j~0 := 0; 151#L378-2 [2020-11-29 18:20:36,358 INFO L796 eck$LassoCheckResult]: Loop: 151#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 153#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 151#L378-2 [2020-11-29 18:20:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2020-11-29 18:20:36,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:36,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686629877] [2020-11-29 18:20:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,417 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:36,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2020-11-29 18:20:36,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:36,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085615545] [2020-11-29 18:20:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,448 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:36,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2020-11-29 18:20:36,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:36,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900778692] [2020-11-29 18:20:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:36,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:36,551 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:36,807 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-11-29 18:20:36,898 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:20:36,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:20:36,899 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:20:36,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:20:36,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:20:36,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:36,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:20:36,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:20:36,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: array15_alloca.i_Iteration3_Lasso [2020-11-29 18:20:36,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:20:36,900 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:20:36,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:36,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,096 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-29 18:20:37,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:37,521 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:20:37,521 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/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 [2020-11-29 18:20:37,529 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:37,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:37,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:37,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:37,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:37,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:37,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:37,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:37,536 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/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 [2020-11-29 18:20:37,588 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:37,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:37,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:37,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:37,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:37,597 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:37,597 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:37,609 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:37,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:37,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:37,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:37,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:37,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:37,671 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:37,671 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:37,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:20:37,713 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-29 18:20:37,713 INFO L444 ModelExtractionUtils]: 7 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_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:37,721 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:37,725 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:20:37,726 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:20:37,726 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2020-11-29 18:20:37,777 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 18:20:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:37,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:20:37,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:37,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:20:37,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:37,852 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 18:20:37,852 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 18:20:37,877 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 22 transitions. Complement of second has 5 states. [2020-11-29 18:20:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 18:20:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:20:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-11-29 18:20:37,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 18:20:37,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:37,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-29 18:20:37,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:37,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-29 18:20:37,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:37,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2020-11-29 18:20:37,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:37,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2020-11-29 18:20:37,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 18:20:37,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 18:20:37,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2020-11-29 18:20:37,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:20:37,883 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 18:20:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2020-11-29 18:20:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 18:20:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 18:20:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-29 18:20:37,894 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 18:20:37,894 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 18:20:37,894 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:20:37,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-11-29 18:20:37,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:37,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:37,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:37,899 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:20:37,900 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:20:37,903 INFO L794 eck$LassoCheckResult]: Stem: 249#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 245#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 246#L367 assume !(main_~length~0 < 1); 255#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 256#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 257#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 243#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 244#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 258#L370-3 assume !(main_~i~0 < main_~length~0); 247#L370-4 main_~j~0 := 0; 248#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 254#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 250#L378-2 [2020-11-29 18:20:37,903 INFO L796 eck$LassoCheckResult]: Loop: 250#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 251#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 250#L378-2 [2020-11-29 18:20:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2020-11-29 18:20:37,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:37,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571814214] [2020-11-29 18:20:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:37,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:37,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:37,948 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:37,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2020-11-29 18:20:37,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:37,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044230615] [2020-11-29 18:20:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:37,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:37,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:37,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2020-11-29 18:20:37,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:37,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828864914] [2020-11-29 18:20:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:38,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828864914] [2020-11-29 18:20:38,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226279258] [2020-11-29 18:20:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:20:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:38,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:20:38,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:38,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:20:38,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-11-29 18:20:38,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938947307] [2020-11-29 18:20:38,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:20:38,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:20:38,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:20:38,298 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 10 states. [2020-11-29 18:20:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:20:38,468 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-29 18:20:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:20:38,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-11-29 18:20:38,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:38,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 21 states and 28 transitions. [2020-11-29 18:20:38,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-29 18:20:38,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 18:20:38,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2020-11-29 18:20:38,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:20:38,473 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-11-29 18:20:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2020-11-29 18:20:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-29 18:20:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 18:20:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2020-11-29 18:20:38,476 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-29 18:20:38,476 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-29 18:20:38,476 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 18:20:38,476 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2020-11-29 18:20:38,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:38,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:38,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:38,478 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:20:38,478 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:20:38,478 INFO L794 eck$LassoCheckResult]: Stem: 364#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 360#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 361#L367 assume !(main_~length~0 < 1); 370#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 371#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 372#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 375#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 373#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 374#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 358#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 359#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 376#L370-3 assume !(main_~i~0 < main_~length~0); 362#L370-4 main_~j~0 := 0; 363#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 369#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 365#L378-2 [2020-11-29 18:20:38,478 INFO L796 eck$LassoCheckResult]: Loop: 365#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 366#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 365#L378-2 [2020-11-29 18:20:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1238701285, now seen corresponding path program 2 times [2020-11-29 18:20:38,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:38,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503214320] [2020-11-29 18:20:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:38,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:38,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:38,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2020-11-29 18:20:38,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:38,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721355973] [2020-11-29 18:20:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:38,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:38,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:38,528 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:38,529 INFO L82 PathProgramCache]: Analyzing trace with hash -685992546, now seen corresponding path program 2 times [2020-11-29 18:20:38,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:38,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986061169] [2020-11-29 18:20:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:38,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:38,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:38,565 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:39,018 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 89 [2020-11-29 18:20:39,151 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-29 18:20:39,154 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:20:39,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:20:39,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:20:39,155 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:20:39,155 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:20:39,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:39,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:20:39,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:20:39,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: array15_alloca.i_Iteration5_Lasso [2020-11-29 18:20:39,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:20:39,156 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:20:39,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,367 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-11-29 18:20:39,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:39,857 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:20:39,858 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:39,882 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:39,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:39,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:39,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:39,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:39,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:39,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:39,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:39,887 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/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 [2020-11-29 18:20:39,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:39,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:39,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:39,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:39,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:39,929 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:39,930 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:39,935 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:39,994 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:39,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:39,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:39,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:39,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:39,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:39,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:39,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,003 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,055 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:40,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:40,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:40,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:40,060 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:40,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:40,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:40,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:40,092 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:40,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:40,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:40,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:40,124 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:40,155 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:40,155 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:40,158 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,185 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:40,191 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:40,191 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:40,212 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:40,257 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,264 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:40,264 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:40,276 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,309 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:40,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:40,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:40,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:40,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:40,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:20:40,330 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:20:40,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:20:40,380 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-11-29 18:20:40,380 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:40,382 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:20:40,384 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:20:40,385 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:20:40,385 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = 2*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-29 18:20:40,418 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-11-29 18:20:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:40,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:20:40,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:40,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 18:20:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:40,506 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 18:20:40,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 18:20:40,520 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 23 states and 31 transitions. Complement of second has 5 states. [2020-11-29 18:20:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 18:20:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:20:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2020-11-29 18:20:40,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 2 letters. [2020-11-29 18:20:40,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:40,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 17 letters. Loop has 2 letters. [2020-11-29 18:20:40,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:40,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 18:20:40,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:40,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2020-11-29 18:20:40,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:40,525 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 31 transitions. [2020-11-29 18:20:40,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-29 18:20:40,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-29 18:20:40,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2020-11-29 18:20:40,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:20:40,525 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-29 18:20:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2020-11-29 18:20:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 18:20:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 18:20:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-29 18:20:40,529 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-29 18:20:40,529 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-29 18:20:40,529 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 18:20:40,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 31 transitions. [2020-11-29 18:20:40,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 18:20:40,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:40,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:40,531 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:20:40,532 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:20:40,532 INFO L794 eck$LassoCheckResult]: Stem: 494#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 488#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 489#L367 assume !(main_~length~0 < 1); 500#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 501#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 502#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 506#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 503#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 504#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 490#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 491#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 507#L370-3 assume !(main_~i~0 < main_~length~0); 492#L370-4 main_~j~0 := 0; 493#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 499#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 505#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 508#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 495#L378-2 [2020-11-29 18:20:40,532 INFO L796 eck$LassoCheckResult]: Loop: 495#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 496#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 495#L378-2 [2020-11-29 18:20:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash -685992544, now seen corresponding path program 3 times [2020-11-29 18:20:40,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:40,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841228015] [2020-11-29 18:20:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:40,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:40,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:40,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:40,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:40,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2020-11-29 18:20:40,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:40,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527342874] [2020-11-29 18:20:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:40,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:40,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:40,580 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2108837149, now seen corresponding path program 3 times [2020-11-29 18:20:40,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:40,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094273640] [2020-11-29 18:20:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:40,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094273640] [2020-11-29 18:20:40,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980235841] [2020-11-29 18:20:40,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:20:40,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 18:20:40,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:20:40,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:20:40,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:40,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:20:40,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-11-29 18:20:40,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129840010] [2020-11-29 18:20:40,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:20:40,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 18:20:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:20:40,938 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. cyclomatic complexity: 12 Second operand 13 states. [2020-11-29 18:20:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:20:41,121 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2020-11-29 18:20:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:20:41,121 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 65 transitions. [2020-11-29 18:20:41,123 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 18:20:41,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2020-11-29 18:20:41,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-29 18:20:41,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-29 18:20:41,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2020-11-29 18:20:41,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:20:41,125 INFO L691 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2020-11-29 18:20:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2020-11-29 18:20:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2020-11-29 18:20:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 18:20:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-29 18:20:41,129 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 18:20:41,129 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 18:20:41,129 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 18:20:41,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2020-11-29 18:20:41,130 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 18:20:41,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:41,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:41,131 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:20:41,131 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-11-29 18:20:41,131 INFO L794 eck$LassoCheckResult]: Stem: 647#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 641#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 642#L367 assume !(main_~length~0 < 1); 653#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 654#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 655#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 660#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 664#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 661#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 662#L372 assume !(main_#t~mem209 < 0);havoc main_#t~mem209; 679#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 663#L370-3 assume !(main_~i~0 < main_~length~0); 645#L370-4 main_~j~0 := 0; 646#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 652#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 657#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 658#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 659#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 669#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 668#L378-2 [2020-11-29 18:20:41,132 INFO L796 eck$LassoCheckResult]: Loop: 668#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 665#L378 assume main_#t~mem210 > 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 666#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 670#L378 assume !(main_#t~mem210 > 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 668#L378-2 [2020-11-29 18:20:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2108839069, now seen corresponding path program 4 times [2020-11-29 18:20:41,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:41,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268988927] [2020-11-29 18:20:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:41,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:41,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:41,164 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:41,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2219337, now seen corresponding path program 1 times [2020-11-29 18:20:41,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:41,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953112857] [2020-11-29 18:20:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:41,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:41,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:41,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:41,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:41,189 INFO L82 PathProgramCache]: Analyzing trace with hash 50792363, now seen corresponding path program 5 times [2020-11-29 18:20:41,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:41,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990818528] [2020-11-29 18:20:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:41,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:41,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:41,270 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:41,862 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 101 [2020-11-29 18:20:41,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:20:41 BoogieIcfgContainer [2020-11-29 18:20:41,992 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:20:41,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:20:41,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:20:41,993 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:20:41,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:20:33" (3/4) ... [2020-11-29 18:20:41,997 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 18:20:42,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_34f5f52d-bd01-43a5-8c8b-f89d902b581b/bin/uautomizer/witness.graphml [2020-11-29 18:20:42,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:20:42,046 INFO L168 Benchmark]: Toolchain (without parser) took 9353.08 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 76.3 MB in the beginning and 113.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,046 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:20:42,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.67 ms. Allocated memory is still 104.9 MB. Free memory was 76.0 MB in the beginning and 66.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.96 ms. Allocated memory is still 104.9 MB. Free memory was 66.5 MB in the beginning and 64.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,048 INFO L168 Benchmark]: Boogie Preprocessor took 52.39 ms. Allocated memory is still 104.9 MB. Free memory was 64.6 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,049 INFO L168 Benchmark]: RCFGBuilder took 370.59 ms. Allocated memory is still 104.9 MB. Free memory was 63.5 MB in the beginning and 50.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,049 INFO L168 Benchmark]: BuchiAutomizer took 8174.93 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 50.4 MB in the beginning and 115.7 MB in the end (delta: -65.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,050 INFO L168 Benchmark]: Witness Printer took 51.42 ms. Allocated memory is still 182.5 MB. Free memory was 115.7 MB in the beginning and 113.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:42,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 630.67 ms. Allocated memory is still 104.9 MB. Free memory was 76.0 MB in the beginning and 66.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.96 ms. Allocated memory is still 104.9 MB. Free memory was 66.5 MB in the beginning and 64.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.39 ms. Allocated memory is still 104.9 MB. Free memory was 64.6 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 370.59 ms. Allocated memory is still 104.9 MB. Free memory was 63.5 MB in the beginning and 50.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8174.93 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 50.4 MB in the beginning and 115.7 MB in the end (delta: -65.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 16.1 GB. * Witness Printer took 51.42 ms. Allocated memory is still 182.5 MB. Free memory was 115.7 MB in the beginning and 113.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function 2 * j + 1 and consists of 3 locations. One deterministic module has affine ranking function 2 * j + length and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 39 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.0s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 6.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 6. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 65 SDtfs, 107 SDslu, 83 SDs, 0 SdLazy, 210 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital134 mio100 ax100 hnf97 lsp94 ukn80 mio100 lsp62 div100 bol100 ite100 ukn100 eq162 hnf89 smp88 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5172e9f6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b6c5aa7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66e4517b=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@2718e82f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66e4517b=2, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@762b3a49=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@51c21ec8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@53ba29d3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@bb5fef9=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i 0) [L381] j++ [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND TRUE arr[j] > 0 [L379] j-- [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND FALSE !(arr[j] > 0) [L381] j++ Loop: [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND TRUE arr[j] > 0 [L379] j-- [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND FALSE !(arr[j] > 0) [L381] j++ End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...