./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array14_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_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array14_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 519b4f74907cdda12f126cdccb2c6422dda5240e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 01:24:10,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:24:10,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:24:10,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:24:10,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:24:10,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:24:10,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:24:10,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:24:10,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:24:10,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:24:10,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:24:10,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:24:10,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:24:10,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:24:10,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:24:10,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:24:10,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:24:10,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:24:10,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:24:10,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:24:10,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:24:10,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:24:10,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:24:10,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:24:10,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:24:10,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:24:10,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:24:10,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:24:10,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:24:10,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:24:10,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:24:10,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:24:10,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:24:10,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:24:10,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:24:10,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:24:10,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:24:10,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:24:10,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:24:10,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:24:10,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:24:10,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:24:10,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:24:10,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:24:10,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:24:10,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:24:10,478 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:24:10,478 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:24:10,478 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:24:10,479 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:24:10,479 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:24:10,479 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:24:10,481 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:24:10,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:24:10,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:24:10,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:24:10,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:24:10,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:24:10,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:24:10,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:24:10,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:24:10,483 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:24:10,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:24:10,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:24:10,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:24:10,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:24:10,485 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:24:10,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:24:10,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:24:10,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:24:10,486 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:24:10,489 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:24:10,490 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_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 519b4f74907cdda12f126cdccb2c6422dda5240e [2020-11-30 01:24:10,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:24:10,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:24:10,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:24:10,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:24:10,897 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:24:10,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/../../sv-benchmarks/c/termination-15/array14_alloca.i [2020-11-30 01:24:10,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/data/8b11ab2a2/94a8025a0a454589aaa96bc8ac0d6c60/FLAG61e85e4a0 [2020-11-30 01:24:11,694 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:24:11,695 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/sv-benchmarks/c/termination-15/array14_alloca.i [2020-11-30 01:24:11,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/data/8b11ab2a2/94a8025a0a454589aaa96bc8ac0d6c60/FLAG61e85e4a0 [2020-11-30 01:24:11,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/data/8b11ab2a2/94a8025a0a454589aaa96bc8ac0d6c60 [2020-11-30 01:24:11,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:24:11,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:24:11,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:24:11,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:24:11,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:24:11,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:24:11" (1/1) ... [2020-11-30 01:24:11,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252fba3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:11, skipping insertion in model container [2020-11-30 01:24:11,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:24:11" (1/1) ... [2020-11-30 01:24:11,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:24:12,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:24:12,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:24:12,430 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:24:12,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:24:12,554 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:24:12,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12 WrapperNode [2020-11-30 01:24:12,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:24:12,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:24:12,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:24:12,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:24:12,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:24:12,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:24:12,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:24:12,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:24:12,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... [2020-11-30 01:24:12,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:24:12,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:24:12,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:24:12,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:24:12,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:24:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:24:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:24:12,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:24:12,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:24:12,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:24:13,077 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:24:13,078 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:24:13,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:24:13 BoogieIcfgContainer [2020-11-30 01:24:13,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:24:13,081 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:24:13,081 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:24:13,085 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:24:13,086 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:24:13,086 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:24:11" (1/3) ... [2020-11-30 01:24:13,088 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48c1dfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:24:13, skipping insertion in model container [2020-11-30 01:24:13,089 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:24:13,089 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:24:12" (2/3) ... [2020-11-30 01:24:13,089 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48c1dfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:24:13, skipping insertion in model container [2020-11-30 01:24:13,090 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:24:13,090 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:24:13" (3/3) ... [2020-11-30 01:24:13,091 INFO L373 chiAutomizerObserver]: Analyzing ICFG array14_alloca.i [2020-11-30 01:24:13,178 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:24:13,178 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:24:13,178 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:24:13,179 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:24:13,179 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:24:13,179 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:24:13,179 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:24:13,179 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:24:13,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-30 01:24:13,230 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-30 01:24:13,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:13,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:13,255 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:24:13,256 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:24:13,256 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:24:13,256 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-30 01:24:13,258 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-30 01:24:13,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:13,258 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:13,259 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:24:13,259 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:24:13,267 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 [2020-11-30 01:24:13,268 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 [2020-11-30 01:24:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-30 01:24:13,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:13,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155313731] [2020-11-30 01:24:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:13,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:13,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:13,489 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:13,496 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2020-11-30 01:24:13,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:13,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722374316] [2020-11-30 01:24:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:13,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:13,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:13,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2020-11-30 01:24:13,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:13,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094756744] [2020-11-30 01:24:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:13,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:13,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:13,666 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:13,949 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-30 01:24:14,007 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:24:14,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:24:14,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:24:14,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:24:14,011 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:24:14,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:14,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:24:14,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:24:14,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: array14_alloca.i_Iteration1_Lasso [2020-11-30 01:24:14,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:24:14,012 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:24:14,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,222 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-11-30 01:24:14,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:14,607 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:24:14,612 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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) [2020-11-30 01:24:14,621 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 [2020-11-30 01:24:14,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:14,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:14,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:14,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:14,633 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:24:14,684 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 [2020-11-30 01:24:14,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:14,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:14,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:14,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:14,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:14,734 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 [2020-11-30 01:24:14,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:14,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:14,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:14,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:14,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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) [2020-11-30 01:24:14,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:14,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:14,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:14,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:14,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:14,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:14,833 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 [2020-11-30 01:24:14,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:14,860 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:14,860 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:14,870 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:14,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:24:14,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:14,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:14,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:14,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:14,934 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:24:14,975 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 [2020-11-30 01:24:14,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:14,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:14,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:14,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:14,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:14,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:15,013 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:24:15,053 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-30 01:24:15,053 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_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:15,089 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:24:15,092 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:24:15,093 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:24:15,094 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 [] [2020-11-30 01:24:15,157 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 01:24:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:24:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:15,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:24:15,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:15,298 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 [2020-11-30 01:24:15,299 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-11-30 01:24:15,379 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. [2020-11-30 01:24:15,381 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 [2020-11-30 01:24:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:24:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2020-11-30 01:24:15,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-30 01:24:15,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:15,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-30 01:24:15,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:15,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-30 01:24:15,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:15,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2020-11-30 01:24:15,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:15,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2020-11-30 01:24:15,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-30 01:24:15,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-30 01:24:15,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-11-30 01:24:15,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:24:15,409 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-30 01:24:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-11-30 01:24:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:24:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:24:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-11-30 01:24:15,444 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-30 01:24:15,444 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-30 01:24:15,444 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:24:15,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2020-11-30 01:24:15,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:15,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:15,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:15,448 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:15,448 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:24:15,449 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 [2020-11-30 01:24:15,449 INFO L796 eck$LassoCheckResult]: Loop: 118#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 120#L378 assume main_#t~mem210 < 0;havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := main_#t~post211 - 1;havoc main_#t~post211; 118#L378-2 [2020-11-30 01:24:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2020-11-30 01:24:15,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:15,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180074954] [2020-11-30 01:24:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:15,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180074954] [2020-11-30 01:24:15,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:24:15,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:24:15,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821001575] [2020-11-30 01:24:15,555 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:24:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:15,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2020-11-30 01:24:15,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:15,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291335572] [2020-11-30 01:24:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,581 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:15,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:24:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:24:15,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:24:15,645 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-30 01:24:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:24:15,688 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-11-30 01:24:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:24:15,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2020-11-30 01:24:15,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:15,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2020-11-30 01:24:15,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:24:15,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-30 01:24:15,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2020-11-30 01:24:15,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:24:15,692 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-11-30 01:24:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2020-11-30 01:24:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-11-30 01:24:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:24:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-11-30 01:24:15,694 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-30 01:24:15,694 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-30 01:24:15,694 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:24:15,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-11-30 01:24:15,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:15,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:15,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:15,696 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:15,696 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:24:15,696 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 146#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 147#L367 assume !(main_~length~0 < 1); 154#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 155#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 156#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 148#L372 assume !(main_#t~mem209 > 0);havoc main_#t~mem209; 149#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 157#L370-3 assume !(main_~i~0 < main_~length~0); 150#L370-4 main_~j~0 := 0; 151#L378-2 [2020-11-30 01:24:15,696 INFO L796 eck$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 [2020-11-30 01:24:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:15,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2020-11-30 01:24:15,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:15,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686997374] [2020-11-30 01:24:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,730 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2020-11-30 01:24:15,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:15,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906898893] [2020-11-30 01:24:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2020-11-30 01:24:15,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:15,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342213231] [2020-11-30 01:24:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:15,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:15,786 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:16,177 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-11-30 01:24:16,262 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:24:16,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:24:16,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:24:16,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:24:16,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:24:16,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:16,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:24:16,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:24:16,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: array14_alloca.i_Iteration3_Lasso [2020-11-30 01:24:16,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:24:16,263 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:24:16,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,446 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-30 01:24:16,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:16,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:24:16,898 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:16,906 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 [2020-11-30 01:24:16,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:16,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:16,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:16,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:16,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:16,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:16,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:16,927 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:16,952 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 [2020-11-30 01:24:16,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:16,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:16,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:16,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:16,958 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:16,958 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:16,964 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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) [2020-11-30 01:24:17,012 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 [2020-11-30 01:24:17,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:17,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:17,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:17,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:17,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:17,025 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 [2020-11-30 01:24:17,042 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:24:17,083 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-30 01:24:17,083 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_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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) [2020-11-30 01:24:17,093 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 [2020-11-30 01:24:17,098 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:24:17,098 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:24:17,098 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2020-11-30 01:24:17,154 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 01:24:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:24:17,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:24:17,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:17,239 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 [2020-11-30 01:24:17,239 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-30 01:24:17,262 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. [2020-11-30 01:24:17,263 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 [2020-11-30 01:24:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:24:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-11-30 01:24:17,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-30 01:24:17,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:17,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-30 01:24:17,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:17,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-30 01:24:17,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:17,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2020-11-30 01:24:17,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:17,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2020-11-30 01:24:17,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:24:17,267 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:24:17,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2020-11-30 01:24:17,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:24:17,267 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-30 01:24:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2020-11-30 01:24:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:24:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:24:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-30 01:24:17,270 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-30 01:24:17,270 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-30 01:24:17,270 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:24:17,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-11-30 01:24:17,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:17,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:17,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:17,272 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:17,272 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:24:17,272 INFO L794 eck$LassoCheckResult]: Stem: 249#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 245#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 246#L367 assume !(main_~length~0 < 1); 255#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 256#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 257#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 243#L372 assume !(main_#t~mem209 > 0);havoc main_#t~mem209; 244#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 258#L370-3 assume !(main_~i~0 < main_~length~0); 247#L370-4 main_~j~0 := 0; 248#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 254#L378 assume !(main_#t~mem210 < 0);havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := 1 + main_#t~post212;havoc main_#t~post212; 250#L378-2 [2020-11-30 01:24:17,273 INFO L796 eck$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 [2020-11-30 01:24:17,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:17,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2020-11-30 01:24:17,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:17,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154755460] [2020-11-30 01:24:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2020-11-30 01:24:17,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:17,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702661245] [2020-11-30 01:24:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,375 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:17,376 INFO L82 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2020-11-30 01:24:17,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:17,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548117280] [2020-11-30 01:24:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:17,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548117280] [2020-11-30 01:24:17,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565408094] [2020-11-30 01:24:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:17,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:24:17,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:17,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:24:17,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-11-30 01:24:17,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149064260] [2020-11-30 01:24:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:24:17,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:24:17,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:24:17,710 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 10 states. [2020-11-30 01:24:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:24:17,906 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-30 01:24:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:24:17,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-11-30 01:24:17,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:17,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 21 states and 28 transitions. [2020-11-30 01:24:17,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:24:17,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:24:17,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2020-11-30 01:24:17,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:24:17,910 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-11-30 01:24:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2020-11-30 01:24:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-30 01:24:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 01:24:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2020-11-30 01:24:17,913 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-30 01:24:17,913 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-30 01:24:17,913 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:24:17,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2020-11-30 01:24:17,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:17,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:17,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:17,915 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:17,915 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:24:17,915 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 [2020-11-30 01:24:17,915 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 [2020-11-30 01:24:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:17,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1238701285, now seen corresponding path program 2 times [2020-11-30 01:24:17,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:17,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783325816] [2020-11-30 01:24:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,960 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:17,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2020-11-30 01:24:17,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:17,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438758152] [2020-11-30 01:24:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:17,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:17,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:18,004 INFO L82 PathProgramCache]: Analyzing trace with hash -685992546, now seen corresponding path program 2 times [2020-11-30 01:24:18,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:18,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422650315] [2020-11-30 01:24:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:18,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:18,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:18,071 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:18,425 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 89 [2020-11-30 01:24:18,525 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:24:18,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:24:18,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:24:18,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:24:18,526 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:24:18,526 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:18,526 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:24:18,526 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:24:18,526 INFO L133 ssoRankerPreferences]: Filename of dumped script: array14_alloca.i_Iteration5_Lasso [2020-11-30 01:24:18,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:24:18,526 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:24:18,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,751 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-11-30 01:24:18,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:18,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:24:19,218 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:24:19,218 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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) [2020-11-30 01:24:19,226 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 [2020-11-30 01:24:19,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:19,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:19,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:19,232 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,261 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 [2020-11-30 01:24:19,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,266 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:19,267 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:19,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:19,295 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 [2020-11-30 01:24:19,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:19,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:19,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:19,303 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,332 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 [2020-11-30 01:24:19,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:19,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,334 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:19,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:19,342 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,369 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 [2020-11-30 01:24:19,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:19,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:19,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:19,372 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,403 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 [2020-11-30 01:24:19,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:24:19,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:24:19,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:24:19,407 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,437 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 [2020-11-30 01:24:19,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,441 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:19,441 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:19,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,479 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 [2020-11-30 01:24:19,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,485 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:19,485 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:19,513 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:24:19,541 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 [2020-11-30 01:24:19,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,554 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:19,554 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:19,561 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,588 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 [2020-11-30 01:24:19,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:24:19,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:24:19,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:24:19,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:24:19,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:24:19,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:24:19,612 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:24:19,654 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-11-30 01:24:19,654 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_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:19,657 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:24:19,660 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:24:19,660 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:24:19,660 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 [] [2020-11-30 01:24:19,697 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-11-30 01:24:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:19,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:24:19,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:24:19,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:19,775 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 [2020-11-30 01:24:19,775 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-30 01:24:19,791 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. [2020-11-30 01:24:19,792 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 [2020-11-30 01:24:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:24:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2020-11-30 01:24:19,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 2 letters. [2020-11-30 01:24:19,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:19,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 17 letters. Loop has 2 letters. [2020-11-30 01:24:19,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:19,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-30 01:24:19,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:24:19,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2020-11-30 01:24:19,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:19,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 31 transitions. [2020-11-30 01:24:19,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-30 01:24:19,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-30 01:24:19,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2020-11-30 01:24:19,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:24:19,795 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-30 01:24:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2020-11-30 01:24:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:24:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:24:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-30 01:24:19,797 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-30 01:24:19,797 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-30 01:24:19,797 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 01:24:19,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 31 transitions. [2020-11-30 01:24:19,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 01:24:19,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:19,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:19,798 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:19,798 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:24:19,798 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 [2020-11-30 01:24:19,799 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 [2020-11-30 01:24:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash -685992544, now seen corresponding path program 3 times [2020-11-30 01:24:19,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:19,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509054675] [2020-11-30 01:24:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:19,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:19,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:19,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:19,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2020-11-30 01:24:19,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:19,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055448570] [2020-11-30 01:24:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:19,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:19,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:19,882 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:19,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2108837149, now seen corresponding path program 3 times [2020-11-30 01:24:19,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:19,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909843554] [2020-11-30 01:24:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:24:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:20,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909843554] [2020-11-30 01:24:20,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412267076] [2020-11-30 01:24:20,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/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 [2020-11-30 01:24:20,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 01:24:20,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:24:20,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:24:20,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:24:20,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:24:20,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-11-30 01:24:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447560441] [2020-11-30 01:24:20,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:24:20,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:24:20,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:24:20,340 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. cyclomatic complexity: 12 Second operand 13 states. [2020-11-30 01:24:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:24:20,546 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2020-11-30 01:24:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:24:20,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 65 transitions. [2020-11-30 01:24:20,549 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-30 01:24:20,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2020-11-30 01:24:20,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-30 01:24:20,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-30 01:24:20,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2020-11-30 01:24:20,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:24:20,550 INFO L691 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2020-11-30 01:24:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2020-11-30 01:24:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2020-11-30 01:24:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 01:24:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-30 01:24:20,555 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-30 01:24:20,555 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-30 01:24:20,555 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 01:24:20,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2020-11-30 01:24:20,556 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:24:20,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:24:20,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:24:20,558 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:20,558 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-11-30 01:24:20,558 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 [2020-11-30 01:24:20,558 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 [2020-11-30 01:24:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:20,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2108839069, now seen corresponding path program 4 times [2020-11-30 01:24:20,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:20,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668056321] [2020-11-30 01:24:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:20,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:20,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:20,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2219337, now seen corresponding path program 1 times [2020-11-30 01:24:20,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:20,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404696188] [2020-11-30 01:24:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:20,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:20,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:20,660 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash 50792363, now seen corresponding path program 5 times [2020-11-30 01:24:20,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:24:20,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423846431] [2020-11-30 01:24:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:24:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:20,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:24:20,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:24:20,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:24:21,381 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 101 [2020-11-30 01:24:21,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:24:21 BoogieIcfgContainer [2020-11-30 01:24:21,531 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:24:21,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:24:21,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:24:21,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:24:21,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:24:13" (3/4) ... [2020-11-30 01:24:21,535 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:24:21,607 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bc9cb66b-fa8a-46ab-bac1-8a1cfd6f01cc/bin/uautomizer/witness.graphml [2020-11-30 01:24:21,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:24:21,608 INFO L168 Benchmark]: Toolchain (without parser) took 9632.15 ms. Allocated memory was 115.3 MB in the beginning and 182.5 MB in the end (delta: 67.1 MB). Free memory was 87.8 MB in the beginning and 116.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,610 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:24:21,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.08 ms. Allocated memory is still 115.3 MB. Free memory was 87.8 MB in the beginning and 78.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.49 ms. Allocated memory is still 115.3 MB. Free memory was 78.4 MB in the beginning and 76.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,612 INFO L168 Benchmark]: Boogie Preprocessor took 28.54 ms. Allocated memory is still 115.3 MB. Free memory was 76.8 MB in the beginning and 75.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,612 INFO L168 Benchmark]: RCFGBuilder took 443.56 ms. Allocated memory is still 115.3 MB. Free memory was 75.6 MB in the beginning and 62.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,614 INFO L168 Benchmark]: BuchiAutomizer took 8450.19 ms. Allocated memory was 115.3 MB in the beginning and 182.5 MB in the end (delta: 67.1 MB). Free memory was 62.1 MB in the beginning and 118.2 MB in the end (delta: -56.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,614 INFO L168 Benchmark]: Witness Printer took 75.77 ms. Allocated memory is still 182.5 MB. Free memory was 118.2 MB in the beginning and 116.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:24:21,619 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 is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 578.08 ms. Allocated memory is still 115.3 MB. Free memory was 87.8 MB in the beginning and 78.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.49 ms. Allocated memory is still 115.3 MB. Free memory was 78.4 MB in the beginning and 76.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.54 ms. Allocated memory is still 115.3 MB. Free memory was 76.8 MB in the beginning and 75.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 443.56 ms. Allocated memory is still 115.3 MB. Free memory was 75.6 MB in the beginning and 62.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8450.19 ms. Allocated memory was 115.3 MB in the beginning and 182.5 MB in the end (delta: 67.1 MB). Free memory was 62.1 MB in the beginning and 118.2 MB in the end (delta: -56.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. * Witness Printer took 75.77 ms. Allocated memory is still 182.5 MB. Free memory was 118.2 MB in the beginning and 116.1 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 8.3s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 7.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. 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: 43ms 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@10b4e958=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2cc2c329=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9a51f1c=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@6eb02dc1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9a51f1c=2, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6d4a3168=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@42b39aff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@462f5e22=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1cffc146=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) [L370] i++ [L370] COND TRUE i 0) [L370] i++ [L370] COND FALSE !(i