./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array20_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array20_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC --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 15cc26ae0dc42c909592f114b7003fa240a2d07d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 00:27:31,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:27:31,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:27:32,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:27:32,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:27:32,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:27:32,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:27:32,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:27:32,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:27:32,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:27:32,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:27:32,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:27:32,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:27:32,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:27:32,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:27:32,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:27:32,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:27:32,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:27:32,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:27:32,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:27:32,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:27:32,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:27:32,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:27:32,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:27:32,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:27:32,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:27:32,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:27:32,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:27:32,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:27:32,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:27:32,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:27:32,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:27:32,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:27:32,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:27:32,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:27:32,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:27:32,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:27:32,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:27:32,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:27:32,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:27:32,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:27:32,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:27:32,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:27:32,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:27:32,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:27:32,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:27:32,120 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:27:32,120 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:27:32,120 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:27:32,120 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:27:32,121 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:27:32,121 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:27:32,121 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:27:32,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:27:32,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:27:32,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:27:32,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:27:32,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:27:32,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:27:32,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:27:32,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:27:32,124 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:27:32,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:27:32,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:27:32,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:27:32,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:27:32,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:27:32,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:27:32,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:27:32,126 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:27:32,127 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_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15cc26ae0dc42c909592f114b7003fa240a2d07d [2021-10-11 00:27:32,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:27:32,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:27:32,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:27:32,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:27:32,468 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:27:32,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-15/array20_alloca.i [2021-10-11 00:27:32,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/data/88a4efa62/321a12420c7c400da22e33040f92af5b/FLAG58a11f575 [2021-10-11 00:27:33,157 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:33,159 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/sv-benchmarks/c/termination-15/array20_alloca.i [2021-10-11 00:27:33,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/data/88a4efa62/321a12420c7c400da22e33040f92af5b/FLAG58a11f575 [2021-10-11 00:27:33,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/data/88a4efa62/321a12420c7c400da22e33040f92af5b [2021-10-11 00:27:33,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:33,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:33,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:33,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:33,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:33,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:33" (1/1) ... [2021-10-11 00:27:33,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c585a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:33, skipping insertion in model container [2021-10-11 00:27:33,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:33" (1/1) ... [2021-10-11 00:27:33,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:33,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:33,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:33,876 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:33,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:34,013 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:34,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34 WrapperNode [2021-10-11 00:27:34,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:34,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:34,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:34,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:34,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:34,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:34,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:34,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:34,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... [2021-10-11 00:27:34,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:34,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:34,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:34,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:34,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:27:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:27:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:27:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:27:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:27:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:34,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:34,526 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 00:27:34,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:34 BoogieIcfgContainer [2021-10-11 00:27:34,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:34,528 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:27:34,529 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:27:34,545 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:27:34,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:27:34,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:27:33" (1/3) ... [2021-10-11 00:27:34,556 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5eef3f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:27:34, skipping insertion in model container [2021-10-11 00:27:34,556 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:27:34,556 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:34" (2/3) ... [2021-10-11 00:27:34,557 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5eef3f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:27:34, skipping insertion in model container [2021-10-11 00:27:34,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:27:34,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:34" (3/3) ... [2021-10-11 00:27:34,558 INFO L389 chiAutomizerObserver]: Analyzing ICFG array20_alloca.i [2021-10-11 00:27:34,637 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:27:34,655 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:27:34,655 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:27:34,656 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:34,656 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:34,656 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:27:34,656 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:34,656 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:27:34,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2021-10-11 00:27:34,690 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-11 00:27:34,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:34,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:34,697 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-11 00:27:34,697 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:27:34,698 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:27:34,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2021-10-11 00:27:34,700 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-11 00:27:34,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:34,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:34,701 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-11 00:27:34,702 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:27:34,709 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#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_~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; 15#L367true assume !(main_~length~0 < 1); 4#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; 16#L370-3true [2021-10-11 00:27:34,710 INFO L796 eck$LassoCheckResult]: Loop: 16#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); 8#L372true assume main_#t~mem209 < 1;havoc main_#t~mem209;call write~int(1, 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; 16#L370-3true [2021-10-11 00:27:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:34,723 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-10-11 00:27:34,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:34,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911460684] [2021-10-11 00:27:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:34,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:34,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:34,900 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-10-11 00:27:34,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:34,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013619233] [2021-10-11 00:27:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:34,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:34,952 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:34,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-10-11 00:27:34,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:34,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132085627] [2021-10-11 00:27:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:34,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:35,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:35,043 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:35,312 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-10-11 00:27:35,368 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:35,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:35,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:35,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:35,370 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:27:35,370 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:35,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:35,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:35,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: array20_alloca.i_Iteration1_Lasso [2021-10-11 00:27:35,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:35,371 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:35,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:35,813 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:35,818 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:35,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:35,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:35,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:27:35,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:35,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:35,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:35,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:27:35,832 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 [2021-10-11 00:27:35,841 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:35,882 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 [2021-10-11 00:27:35,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:35,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:27:35,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:35,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:35,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:35,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:27:35,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:35,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:35,935 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 [2021-10-11 00:27:35,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:35,939 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:27:35,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:35,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:35,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:35,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:27:35,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:35,963 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:36,002 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 [2021-10-11 00:27:36,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:36,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:36,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:36,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:36,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:27:36,011 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:27:36,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:27:36,045 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 [2021-10-11 00:27:36,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:36,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:27:36,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:36,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:36,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:36,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:27:36,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:27:36,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:36,108 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:36,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:36,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:36,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:36,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:36,124 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:27:36,124 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:36,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:27:36,180 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-10-11 00:27:36,180 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:27:36,186 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:27:36,197 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-11 00:27:36,197 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:27:36,198 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1, ULTIMATE.start_main_~i~0) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1 - 4*ULTIMATE.start_main_~i~0 Supporting invariants [1*ULTIMATE.start_main_~arr~0.offset >= 0] [2021-10-11 00:27:36,239 INFO L297 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2021-10-11 00:27:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:36,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:27:36,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:36,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:27:36,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:36,422 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-11 00:27:36,423 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2021-10-11 00:27:36,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 29 states and 41 transitions. Complement of second has 9 states. [2021-10-11 00:27:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:27:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:27:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2021-10-11 00:27:36,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-11 00:27:36,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:36,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-11 00:27:36,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:36,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 5 letters. Loop has 6 letters. [2021-10-11 00:27:36,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:36,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 41 transitions. [2021-10-11 00:27:36,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:27:36,525 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 11 states and 15 transitions. [2021-10-11 00:27:36,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-11 00:27:36,527 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-11 00:27:36,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2021-10-11 00:27:36,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:27:36,528 INFO L692 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-11 00:27:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2021-10-11 00:27:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 00:27:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:27:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-11 00:27:36,552 INFO L715 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-11 00:27:36,552 INFO L595 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-11 00:27:36,552 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:27:36,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-10-11 00:27:36,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:27:36,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:36,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:36,554 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:36,554 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:27:36,554 INFO L794 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 120#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_~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; 121#L367 assume !(main_~length~0 < 1); 125#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; 126#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 127#L370-3 assume !(main_~i~0 < main_~length~0); 122#L370-4 main_~j~0 := 1; 123#L377-2 [2021-10-11 00:27:36,555 INFO L796 eck$LassoCheckResult]: Loop: 123#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 123#L377-2 [2021-10-11 00:27:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:36,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-10-11 00:27:36,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:36,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222892286] [2021-10-11 00:27:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:36,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222892286] [2021-10-11 00:27:36,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:36,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:36,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339173014] [2021-10-11 00:27:36,604 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:27:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2021-10-11 00:27:36,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:36,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931758437] [2021-10-11 00:27:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:36,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:27:36,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770594059] [2021-10-11 00:27:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:27:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:36,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:36,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:36,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:36,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:36,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:36,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:36,684 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand 4 states. [2021-10-11 00:27:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:36,718 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2021-10-11 00:27:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:36,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-10-11 00:27:36,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:27:36,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2021-10-11 00:27:36,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-11 00:27:36,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-11 00:27:36,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-10-11 00:27:36,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:27:36,721 INFO L692 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-11 00:27:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-10-11 00:27:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2021-10-11 00:27:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:27:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-11 00:27:36,722 INFO L715 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-11 00:27:36,723 INFO L595 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-11 00:27:36,723 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:27:36,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2021-10-11 00:27:36,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:27:36,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:36,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:36,724 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:36,724 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:27:36,724 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 149#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 150#L367 assume !(main_~length~0 < 1); 156#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 157#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 158#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 151#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 152#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 159#L370-3 assume !(main_~i~0 < main_~length~0); 153#L370-4 main_~j~0 := 1; 154#L377-2 [2021-10-11 00:27:36,725 INFO L796 eck$LassoCheckResult]: Loop: 154#L377-2 assume !!(1 <= 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);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 154#L377-2 [2021-10-11 00:27:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-10-11 00:27:36,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:36,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253377416] [2021-10-11 00:27:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:36,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:36,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:36,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:36,772 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2021-10-11 00:27:36,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:36,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463683030] [2021-10-11 00:27:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:36,775 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:27:36,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801816402] [2021-10-11 00:27:36,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:27:36,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:27:36,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-11 00:27:36,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:36,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:36,887 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:36,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2021-10-11 00:27:36,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:36,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316413400] [2021-10-11 00:27:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:36,897 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:27:36,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285965419] [2021-10-11 00:27:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:36,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:27:36,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:37,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316413400] [2021-10-11 00:27:37,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:27:37,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285965419] [2021-10-11 00:27:37,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:27:37,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-11 00:27:37,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725465658] [2021-10-11 00:27:37,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:37,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:27:37,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:27:37,053 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 6 states. [2021-10-11 00:27:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:37,153 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-10-11 00:27:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:27:37,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-10-11 00:27:37,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:27:37,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2021-10-11 00:27:37,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-11 00:27:37,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-11 00:27:37,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2021-10-11 00:27:37,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:27:37,164 INFO L692 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-11 00:27:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2021-10-11 00:27:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-10-11 00:27:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:27:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-11 00:27:37,167 INFO L715 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-11 00:27:37,167 INFO L595 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-11 00:27:37,167 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:27:37,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-10-11 00:27:37,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:27:37,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:37,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:37,172 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:37,173 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:27:37,173 INFO L794 eck$LassoCheckResult]: Stem: 237#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 233#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 234#L367 assume !(main_~length~0 < 1); 238#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 239#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 240#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 242#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 244#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 243#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 231#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 232#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 241#L370-3 assume !(main_~i~0 < main_~length~0); 235#L370-4 main_~j~0 := 1; 236#L377-2 [2021-10-11 00:27:37,173 INFO L796 eck$LassoCheckResult]: Loop: 236#L377-2 assume !!(1 <= 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);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 236#L377-2 [2021-10-11 00:27:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:37,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2021-10-11 00:27:37,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:37,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240049530] [2021-10-11 00:27:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:37,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:37,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:37,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2021-10-11 00:27:37,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:37,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694788186] [2021-10-11 00:27:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:37,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:27:37,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984276445] [2021-10-11 00:27:37,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:37,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 00:27:37,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-11 00:27:37,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:37,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:37,325 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:37,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2021-10-11 00:27:37,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:37,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509040550] [2021-10-11 00:27:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:37,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:27:37,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384548550] [2021-10-11 00:27:37,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:37,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:27:37,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-11 00:27:37,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:37,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:37,434 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:37,723 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2021-10-11 00:27:37,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:27:37 BoogieIcfgContainer [2021-10-11 00:27:37,859 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:27:37,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:37,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:37,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:37,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:34" (3/4) ... [2021-10-11 00:27:37,864 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-11 00:27:37,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9932950c-f578-4752-8391-772c5582d8b4/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:37,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:37,904 INFO L168 Benchmark]: Toolchain (without parser) took 4442.21 ms. Allocated memory was 132.1 MB in the beginning and 172.0 MB in the end (delta: 39.8 MB). Free memory was 101.5 MB in the beginning and 141.2 MB in the end (delta: -39.7 MB). Peak memory consumption was 570.0 kB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,905 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:37,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.63 ms. Allocated memory is still 132.1 MB. Free memory was 101.1 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.03 ms. Allocated memory is still 132.1 MB. Free memory was 91.9 MB in the beginning and 89.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,907 INFO L168 Benchmark]: Boogie Preprocessor took 53.04 ms. Allocated memory is still 132.1 MB. Free memory was 89.9 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,907 INFO L168 Benchmark]: RCFGBuilder took 400.02 ms. Allocated memory is still 132.1 MB. Free memory was 88.4 MB in the beginning and 75.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,908 INFO L168 Benchmark]: BuchiAutomizer took 3331.14 ms. Allocated memory was 132.1 MB in the beginning and 172.0 MB in the end (delta: 39.8 MB). Free memory was 75.2 MB in the beginning and 143.3 MB in the end (delta: -68.1 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,908 INFO L168 Benchmark]: Witness Printer took 43.27 ms. Allocated memory is still 172.0 MB. Free memory was 143.3 MB in the beginning and 141.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:37,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 550.63 ms. Allocated memory is still 132.1 MB. Free memory was 101.1 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.03 ms. Allocated memory is still 132.1 MB. Free memory was 91.9 MB in the beginning and 89.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.04 ms. Allocated memory is still 132.1 MB. Free memory was 89.9 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 400.02 ms. Allocated memory is still 132.1 MB. Free memory was 88.4 MB in the beginning and 75.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3331.14 ms. Allocated memory was 132.1 MB in the beginning and 172.0 MB in the end (delta: 39.8 MB). Free memory was 75.2 MB in the beginning and 143.3 MB in the end (delta: -68.1 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. * Witness Printer took 43.27 ms. Allocated memory is still 172.0 MB. Free memory was 143.3 MB in the beginning and 141.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length*sizeof(int))] + -4 * i and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 53 SDslu, 27 SDs, 0 SdLazy, 62 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital102 mio100 ax100 hnf100 lsp91 ukn80 mio100 lsp63 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms 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@6dbf73bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2762abe5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3772f25e=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@634b2187=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3772f25e=2, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@71cd72de=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@192df6c0=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