./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b9a71645175fee79e6d6cd797db38ce6044ffb9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:45,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:45,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:45,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:45,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:45,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:45,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:45,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:45,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:45,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:45,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:45,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:45,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:45,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:45,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:45,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:45,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:45,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:45,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:45,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:45,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:45,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:45,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:45,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:45,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:45,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:45,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:45,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:45,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:45,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:45,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:45,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:45,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:45,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:45,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:45,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:45,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:45,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:45,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:45,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:45,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:45,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:13:45,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:45,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:45,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:45,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:45,728 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:45,729 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:13:45,730 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:13:45,731 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:13:45,731 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:13:45,731 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:13:45,733 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:13:45,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:45,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:45,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:13:45,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:45,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:45,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:45,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:13:45,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:13:45,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:13:45,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:45,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:45,737 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:13:45,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:45,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:13:45,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:45,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:45,739 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:13:45,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:45,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:45,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:45,743 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:13:45,746 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:13:45,747 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_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b9a71645175fee79e6d6cd797db38ce6044ffb9 [2020-11-28 03:13:46,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:46,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:46,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:46,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:46,179 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:46,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/../../sv-benchmarks/c/loops/invert_string-1.c [2020-11-28 03:13:46,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/data/522c08330/dac0cbbf16dc463db719456d05649f02/FLAG5216e99a5 [2020-11-28 03:13:46,788 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:46,789 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/sv-benchmarks/c/loops/invert_string-1.c [2020-11-28 03:13:46,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/data/522c08330/dac0cbbf16dc463db719456d05649f02/FLAG5216e99a5 [2020-11-28 03:13:47,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/data/522c08330/dac0cbbf16dc463db719456d05649f02 [2020-11-28 03:13:47,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:47,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:47,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:47,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:47,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:47,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3af555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47, skipping insertion in model container [2020-11-28 03:13:47,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:47,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:47,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:47,468 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:47,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:47,505 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:47,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47 WrapperNode [2020-11-28 03:13:47,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:47,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:47,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:47,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:47,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:47,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:47,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:47,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:47,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... [2020-11-28 03:13:47,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:47,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:47,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:47,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:47,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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 [2020-11-28 03:13:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:13:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:13:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:48,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:48,048 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-28 03:13:48,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:48 BoogieIcfgContainer [2020-11-28 03:13:48,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:48,066 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:13:48,066 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:13:48,070 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:13:48,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:48,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:13:47" (1/3) ... [2020-11-28 03:13:48,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d573105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:13:48, skipping insertion in model container [2020-11-28 03:13:48,085 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:48,085 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:47" (2/3) ... [2020-11-28 03:13:48,086 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d573105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:13:48, skipping insertion in model container [2020-11-28 03:13:48,086 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:48,086 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:48" (3/3) ... [2020-11-28 03:13:48,088 INFO L373 chiAutomizerObserver]: Analyzing ICFG invert_string-1.c [2020-11-28 03:13:48,143 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:13:48,144 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:13:48,144 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:13:48,144 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:48,144 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:48,145 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:13:48,145 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:48,145 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:13:48,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-28 03:13:48,184 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-28 03:13:48,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:48,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:48,191 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:13:48,192 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:48,192 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:13:48,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-28 03:13:48,195 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-28 03:13:48,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:48,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:48,196 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:13:48,196 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:48,206 INFO L794 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 14#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 8#L17true assume !!(main_~MAX~0 > 0); 3#L17-2true call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 12#L22-3true [2020-11-28 03:13:48,207 INFO L796 eck$LassoCheckResult]: Loop: 12#L22-3true assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 13#L22-2true main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 12#L22-3true [2020-11-28 03:13:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-28 03:13:48,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:48,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876037528] [2020-11-28 03:13:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2020-11-28 03:13:48,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:48,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636425351] [2020-11-28 03:13:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,540 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:48,549 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2020-11-28 03:13:48,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:48,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974274125] [2020-11-28 03:13:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,665 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:49,383 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-11-28 03:13:49,958 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2020-11-28 03:13:49,977 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:49,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:49,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:49,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:49,979 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:13:49,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:49,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:49,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:49,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration1_Lasso [2020-11-28 03:13:49,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:49,981 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:50,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,504 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-11-28 03:13:50,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:50,916 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-11-28 03:13:51,304 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:51,310 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:51,319 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:51,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:51,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:51,330 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:51,390 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 [2020-11-28 03:13:51,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,405 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:51,405 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:51,463 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 [2020-11-28 03:13:51,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:51,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:51,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,471 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,519 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 [2020-11-28 03:13:51,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:51,522 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,523 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:51,523 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:51,524 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:51,556 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 [2020-11-28 03:13:51,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:51,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,560 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:51,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:51,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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 [2020-11-28 03:13:51,594 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 [2020-11-28 03:13:51,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:51,603 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:51,629 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:51,678 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 [2020-11-28 03:13:51,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:51,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:51,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,686 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:51,737 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 [2020-11-28 03:13:51,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:51,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,749 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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 [2020-11-28 03:13:51,812 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 [2020-11-28 03:13:51,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,824 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:51,824 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:51,835 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:51,894 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 [2020-11-28 03:13:51,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:51,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:51,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,901 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,931 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 [2020-11-28 03:13:51,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,940 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:51,940 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:51,945 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:51,975 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 [2020-11-28 03:13:51,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:51,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:51,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:51,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:51,980 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:51,981 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:51,986 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,026 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 [2020-11-28 03:13:52,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,031 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,031 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:52,035 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,063 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 [2020-11-28 03:13:52,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,067 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,067 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:52,071 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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 [2020-11-28 03:13:52,099 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 [2020-11-28 03:13:52,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,105 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,105 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:52,128 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,183 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 [2020-11-28 03:13:52,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,190 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,190 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,247 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 [2020-11-28 03:13:52,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,327 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 [2020-11-28 03:13:52,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,340 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,341 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:52,402 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 [2020-11-28 03:13:52,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,408 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,408 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,418 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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 [2020-11-28 03:13:52,446 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 [2020-11-28 03:13:52,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,450 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,451 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:52,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/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) [2020-11-28 03:13:52,492 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 [2020-11-28 03:13:52,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,501 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,502 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,517 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,567 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 [2020-11-28 03:13:52,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,573 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,573 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,649 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 [2020-11-28 03:13:52,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:52,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:52,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:52,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,713 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 [2020-11-28 03:13:52,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:52,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:52,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:52,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:52,724 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:52,741 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:13:52,973 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-28 03:13:52,974 INFO L444 ModelExtractionUtils]: 7 out of 19 variables were initially zero. Simplification set additionally 8 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:52,983 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:52,986 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-28 03:13:52,987 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:13:52,988 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_1) = -1*ULTIMATE.start_main_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_1 Supporting invariants [1*ULTIMATE.start_main_~#str1~0.offset >= 0] [2020-11-28 03:13:53,122 INFO L297 tatePredicateManager]: 16 out of 17 supporting invariants were superfluous and have been removed [2020-11-28 03:13:53,143 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:13:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:13:53,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:13:53,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:53,308 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 [2020-11-28 03:13:53,310 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 3 states. [2020-11-28 03:13:53,402 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 3 states. Result 40 states and 57 transitions. Complement of second has 8 states. [2020-11-28 03:13:53,403 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 [2020-11-28 03:13:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2020-11-28 03:13:53,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:13:53,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:53,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 03:13:53,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:53,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-28 03:13:53,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:53,410 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 57 transitions. [2020-11-28 03:13:53,414 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-28 03:13:53,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 17 states and 22 transitions. [2020-11-28 03:13:53,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 03:13:53,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-28 03:13:53,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2020-11-28 03:13:53,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:13:53,421 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-28 03:13:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2020-11-28 03:13:53,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:13:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:13:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2020-11-28 03:13:53,445 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-28 03:13:53,446 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-28 03:13:53,446 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:13:53,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2020-11-28 03:13:53,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-28 03:13:53,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:53,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:53,448 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:13:53,448 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:53,448 INFO L794 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 193#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 186#L17 assume !!(main_~MAX~0 > 0); 179#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 180#L22-3 assume !(main_~i~0 < main_~MAX~0); 189#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 181#L29-3 [2020-11-28 03:13:53,448 INFO L796 eck$LassoCheckResult]: Loop: 181#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 183#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 181#L29-3 [2020-11-28 03:13:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2020-11-28 03:13:53,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147685950] [2020-11-28 03:13:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:53,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147685950] [2020-11-28 03:13:53,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:53,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:53,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676453386] [2020-11-28 03:13:53,563 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:13:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1955, now seen corresponding path program 1 times [2020-11-28 03:13:53,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380857223] [2020-11-28 03:13:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:53,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:53,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:53,587 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:53,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:53,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:13:53,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:53,665 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-11-28 03:13:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:53,798 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-28 03:13:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:13:53,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 24 transitions. [2020-11-28 03:13:53,805 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:13:53,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 20 states and 22 transitions. [2020-11-28 03:13:53,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-28 03:13:53,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-28 03:13:53,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2020-11-28 03:13:53,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:13:53,807 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:13:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2020-11-28 03:13:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2020-11-28 03:13:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:13:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-28 03:13:53,811 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 03:13:53,812 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 03:13:53,812 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:13:53,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2020-11-28 03:13:53,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:13:53,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:53,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:53,816 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:53,817 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:53,817 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 237#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 232#L17 assume !!(main_~MAX~0 > 0); 225#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 226#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 235#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 236#L22-3 assume !(main_~i~0 < main_~MAX~0); 234#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 227#L29-3 [2020-11-28 03:13:53,817 INFO L796 eck$LassoCheckResult]: Loop: 227#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 229#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 227#L29-3 [2020-11-28 03:13:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,818 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2020-11-28 03:13:53,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945355769] [2020-11-28 03:13:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:53,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:53,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:53,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1955, now seen corresponding path program 2 times [2020-11-28 03:13:53,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565409473] [2020-11-28 03:13:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:53,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:53,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:53,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811567, now seen corresponding path program 1 times [2020-11-28 03:13:53,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739522774] [2020-11-28 03:13:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:54,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:54,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:54,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:55,067 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 113 [2020-11-28 03:13:55,887 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2020-11-28 03:13:55,893 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:55,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:55,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:55,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:55,894 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:13:55,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:55,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:55,894 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:55,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration3_Lasso [2020-11-28 03:13:55,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:55,895 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:55,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:55,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:56,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:56,443 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-28 03:13:56,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:56,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:57,122 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:57,122 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:57,131 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 [2020-11-28 03:13:57,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,146 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,174 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 [2020-11-28 03:13:57,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,179 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,179 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,212 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 [2020-11-28 03:13:57,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,222 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,251 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 [2020-11-28 03:13:57,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,283 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 [2020-11-28 03:13:57,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,287 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,320 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 [2020-11-28 03:13:57,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,323 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,324 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,329 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,358 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 [2020-11-28 03:13:57,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,390 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 [2020-11-28 03:13:57,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,392 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,396 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,429 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 [2020-11-28 03:13:57,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,464 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 [2020-11-28 03:13:57,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,468 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,495 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 [2020-11-28 03:13:57,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,499 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,527 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 [2020-11-28 03:13:57,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,528 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,529 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,529 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:57,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,603 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 [2020-11-28 03:13:57,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,605 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:57,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:57,653 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 [2020-11-28 03:13:57,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,658 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,664 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:57,714 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 [2020-11-28 03:13:57,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,720 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,720 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:57,775 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 [2020-11-28 03:13:57,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,780 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,781 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,790 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:57,836 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 [2020-11-28 03:13:57,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:57,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:57,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,869 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 [2020-11-28 03:13:57,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,874 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,874 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,922 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 [2020-11-28 03:13:57,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,927 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,928 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,933 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:57,962 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 [2020-11-28 03:13:57,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:57,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:57,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:57,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:57,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:57,975 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:57,979 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:58,006 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 [2020-11-28 03:13:58,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:58,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:58,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:58,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:58,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:58,011 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:58,017 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:58,045 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:58,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:58,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:58,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:58,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:58,083 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:58,083 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:58,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:13:58,170 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2020-11-28 03:13:58,170 INFO L444 ModelExtractionUtils]: 10 out of 28 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:58,186 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:58,190 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:13:58,190 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:13:58,190 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_2) = 2*ULTIMATE.start_main_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_2 Supporting invariants [] [2020-11-28 03:13:58,287 INFO L297 tatePredicateManager]: 18 out of 18 supporting invariants were superfluous and have been removed [2020-11-28 03:13:58,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:13:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:58,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:58,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:58,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:13:58,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:58,357 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 [2020-11-28 03:13:58,357 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:13:58,403 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 7 states. [2020-11-28 03:13:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:13:58,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-28 03:13:58,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:58,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-28 03:13:58,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:58,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-28 03:13:58,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:58,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-11-28 03:13:58,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:13:58,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 19 transitions. [2020-11-28 03:13:58,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:13:58,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 03:13:58,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2020-11-28 03:13:58,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:13:58,408 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 03:13:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2020-11-28 03:13:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:13:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:13:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-28 03:13:58,410 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 03:13:58,410 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 03:13:58,411 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:13:58,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2020-11-28 03:13:58,411 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:13:58,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:58,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:58,412 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:58,412 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:13:58,412 INFO L794 eck$LassoCheckResult]: Stem: 398#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 397#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 392#L17 assume !!(main_~MAX~0 > 0); 384#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 385#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 395#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 396#L22-3 assume !(main_~i~0 < main_~MAX~0); 394#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 386#L29-3 assume !(main_~i~0 >= 0); 387#L29-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 399#L35-3 [2020-11-28 03:13:58,412 INFO L796 eck$LassoCheckResult]: Loop: 399#L35-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem14 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem15 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem14 == main_#t~mem15 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 393#L7 assume !(0 == __VERIFIER_assert_~cond); 390#L7-2 havoc main_#t~mem15;havoc main_#t~mem14;main_#t~post16 := main_~j~0;main_~j~0 := main_#t~post16 - 1;havoc main_#t~post16; 391#L35-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 399#L35-3 [2020-11-28 03:13:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811625, now seen corresponding path program 1 times [2020-11-28 03:13:58,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:58,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504884207] [2020-11-28 03:13:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:13:58,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504884207] [2020-11-28 03:13:58,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:58,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:58,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149288324] [2020-11-28 03:13:58,472 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:13:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 1 times [2020-11-28 03:13:58,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:58,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997808343] [2020-11-28 03:13:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,490 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:58,680 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-11-28 03:13:58,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:13:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:58,682 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-28 03:13:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:58,731 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-28 03:13:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:13:58,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2020-11-28 03:13:58,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:13:58,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 18 transitions. [2020-11-28 03:13:58,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-28 03:13:58,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 03:13:58,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2020-11-28 03:13:58,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:13:58,734 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-28 03:13:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2020-11-28 03:13:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:13:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:13:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-28 03:13:58,736 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-28 03:13:58,736 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-28 03:13:58,736 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:13:58,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2020-11-28 03:13:58,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:13:58,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:58,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:58,738 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:58,738 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:13:58,738 INFO L794 eck$LassoCheckResult]: Stem: 440#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 438#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 433#L17 assume !!(main_~MAX~0 > 0); 425#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 426#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 436#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 437#L22-3 assume !(main_~i~0 < main_~MAX~0); 435#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 427#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 428#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 429#L29-3 assume !(main_~i~0 >= 0); 430#L29-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 439#L35-3 [2020-11-28 03:13:58,738 INFO L796 eck$LassoCheckResult]: Loop: 439#L35-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem14 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem15 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem14 == main_#t~mem15 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 434#L7 assume !(0 == __VERIFIER_assert_~cond); 431#L7-2 havoc main_#t~mem15;havoc main_#t~mem14;main_#t~post16 := main_~j~0;main_~j~0 := main_#t~post16 - 1;havoc main_#t~post16; 432#L35-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 439#L35-3 [2020-11-28 03:13:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash -357814151, now seen corresponding path program 1 times [2020-11-28 03:13:58,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:58,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452588850] [2020-11-28 03:13:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 2 times [2020-11-28 03:13:58,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:58,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072974328] [2020-11-28 03:13:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,807 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1607635588, now seen corresponding path program 1 times [2020-11-28 03:13:58,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:58,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311589653] [2020-11-28 03:13:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,906 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:59,163 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-11-28 03:14:00,061 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 133 [2020-11-28 03:14:00,792 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2020-11-28 03:14:00,795 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:00,795 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:00,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:00,795 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:00,796 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:00,796 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:00,796 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:00,796 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:00,796 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration5_Lasso [2020-11-28 03:14:00,796 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:00,796 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:00,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:00,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:01,439 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-11-28 03:14:01,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:01,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:01,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:01,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:01,997 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:01,998 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:02,003 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 [2020-11-28 03:14:02,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,033 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 [2020-11-28 03:14:02,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:02,060 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,091 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 [2020-11-28 03:14:02,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,094 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,097 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,132 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 [2020-11-28 03:14:02,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,136 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,164 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 [2020-11-28 03:14:02,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,165 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,167 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,192 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 [2020-11-28 03:14:02,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,195 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,196 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,226 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 [2020-11-28 03:14:02,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,231 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,255 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 [2020-11-28 03:14:02,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:02,285 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 [2020-11-28 03:14:02,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,290 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,314 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 [2020-11-28 03:14:02,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,315 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,317 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,340 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 [2020-11-28 03:14:02,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,344 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,380 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 [2020-11-28 03:14:02,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,385 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,385 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,402 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,431 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 [2020-11-28 03:14:02,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:02,459 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,491 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 [2020-11-28 03:14:02,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,495 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,496 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,499 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,526 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 [2020-11-28 03:14:02,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,530 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,530 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,534 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,558 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 [2020-11-28 03:14:02,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,561 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,562 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,564 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,593 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 [2020-11-28 03:14:02,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,598 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,598 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,628 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 [2020-11-28 03:14:02,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,631 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,658 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 [2020-11-28 03:14:02,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,662 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,662 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,697 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 [2020-11-28 03:14:02,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,706 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,731 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:14:02,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:02,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:02,734 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:02,735 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,767 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 [2020-11-28 03:14:02,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,786 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 75 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 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,812 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 [2020-11-28 03:14:02,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,815 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,815 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,818 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 76 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 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,840 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 [2020-11-28 03:14:02,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,843 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,843 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,846 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 77 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 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,869 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 [2020-11-28 03:14:02,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,872 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,872 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,902 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 [2020-11-28 03:14:02,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:02,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:02,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:02,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:02,914 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:02,914 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:02,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:02,959 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-11-28 03:14:02,960 INFO L444 ModelExtractionUtils]: 11 out of 28 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:02,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:02,965 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:14:02,965 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:02,965 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~#str2~0.offset, ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~#str2~0.offset + 1*ULTIMATE.start_main_~MAX~0 + 2*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-11-28 03:14:03,103 INFO L297 tatePredicateManager]: 16 out of 17 supporting invariants were superfluous and have been removed [2020-11-28 03:14:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:03,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:14:03,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:03,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:14:03,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:03,436 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-28 03:14:03,436 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 5 Second operand 8 states. [2020-11-28 03:14:03,677 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 5. Second operand 8 states. Result 35 states and 40 transitions. Complement of second has 13 states. [2020-11-28 03:14:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 6 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-28 03:14:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:14:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 27 transitions. [2020-11-28 03:14:03,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 27 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-28 03:14:03,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:03,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 27 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-28 03:14:03,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:03,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 27 transitions. Stem has 12 letters. Loop has 8 letters. [2020-11-28 03:14:03,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:03,682 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 40 transitions. [2020-11-28 03:14:03,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:14:03,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 21 states and 23 transitions. [2020-11-28 03:14:03,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-28 03:14:03,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 03:14:03,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 23 transitions. [2020-11-28 03:14:03,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:14:03,686 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-28 03:14:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 23 transitions. [2020-11-28 03:14:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-11-28 03:14:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:14:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 03:14:03,688 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 03:14:03,689 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 03:14:03,689 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:14:03,689 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2020-11-28 03:14:03,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:14:03,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:03,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:03,691 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:03,691 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:14:03,692 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 656#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 650#L17 assume !!(main_~MAX~0 > 0); 642#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 643#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 653#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 654#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 655#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 659#L22-3 assume !(main_~i~0 < main_~MAX~0); 652#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 644#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 645#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 646#L29-3 assume !(main_~i~0 >= 0); 647#L29-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 657#L35-3 [2020-11-28 03:14:03,692 INFO L796 eck$LassoCheckResult]: Loop: 657#L35-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem14 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem15 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem14 == main_#t~mem15 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 651#L7 assume !(0 == __VERIFIER_assert_~cond); 648#L7-2 havoc main_#t~mem15;havoc main_#t~mem14;main_#t~post16 := main_~j~0;main_~j~0 := main_#t~post16 - 1;havoc main_#t~post16; 649#L35-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 657#L35-3 [2020-11-28 03:14:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash -793654437, now seen corresponding path program 2 times [2020-11-28 03:14:03,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:03,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924367746] [2020-11-28 03:14:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:03,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924367746] [2020-11-28 03:14:03,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841634214] [2020-11-28 03:14:03,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1bbd97f-99b7-4642-bcdf-94ca038494f2/bin/uautomizer/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:14:03,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:14:03,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:14:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:14:03,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:03,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:14:03,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2020-11-28 03:14:03,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540400192] [2020-11-28 03:14:03,850 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:14:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:03,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 3 times [2020-11-28 03:14:03,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:03,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599705195] [2020-11-28 03:14:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:03,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:03,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:03,882 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:04,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:04,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:14:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:14:04,045 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. cyclomatic complexity: 5 Second operand 6 states. [2020-11-28 03:14:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:04,140 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-28 03:14:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:14:04,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 26 transitions. [2020-11-28 03:14:04,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:14:04,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 26 transitions. [2020-11-28 03:14:04,142 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 03:14:04,142 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:14:04,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 26 transitions. [2020-11-28 03:14:04,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:14:04,143 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-11-28 03:14:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 26 transitions. [2020-11-28 03:14:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-11-28 03:14:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:14:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-28 03:14:04,146 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:14:04,146 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:14:04,146 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:14:04,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2020-11-28 03:14:04,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:14:04,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:04,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:04,148 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:04,148 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:14:04,148 INFO L794 eck$LassoCheckResult]: Stem: 754#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 753#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 746#L17 assume !!(main_~MAX~0 > 0); 738#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 739#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 749#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 750#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 751#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 752#L22-3 assume !(main_~i~0 < main_~MAX~0); 748#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 740#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 741#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 742#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 743#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 757#L29-3 assume !(main_~i~0 >= 0); 756#L29-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 755#L35-3 [2020-11-28 03:14:04,148 INFO L796 eck$LassoCheckResult]: Loop: 755#L35-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem14 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem15 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem14 == main_#t~mem15 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 747#L7 assume !(0 == __VERIFIER_assert_~cond); 744#L7-2 havoc main_#t~mem15;havoc main_#t~mem14;main_#t~post16 := main_~j~0;main_~j~0 := main_#t~post16 - 1;havoc main_#t~post16; 745#L35-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 755#L35-3 [2020-11-28 03:14:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:04,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1802321405, now seen corresponding path program 3 times [2020-11-28 03:14:04,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:04,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188069065] [2020-11-28 03:14:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:04,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:04,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:04,194 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 4 times [2020-11-28 03:14:04,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:04,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290092081] [2020-11-28 03:14:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:04,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:04,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:04,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:04,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:04,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1451834888, now seen corresponding path program 2 times [2020-11-28 03:14:04,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:04,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989545986] [2020-11-28 03:14:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:04,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:04,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:04,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:04,418 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-11-28 03:14:06,038 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 192 DAG size of output: 154 [2020-11-28 03:14:06,777 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 101 [2020-11-28 03:14:06,780 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:06,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:06,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:06,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:06,780 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:06,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:06,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:06,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:06,780 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration7_Lasso [2020-11-28 03:14:06,780 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:06,780 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:06,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:06,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:07,122 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: MapEliminator tries to combine Int and (Array Int Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceSelectStoreTerm(MapEliminator.java:592) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceStoreTerms(MapEliminator.java:542) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:330) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:278) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:612) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.access$16(LassoCheck.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:957) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:865) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:382) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-28 03:14:07,125 INFO L168 Benchmark]: Toolchain (without parser) took 19951.89 ms. Allocated memory was 79.7 MB in the beginning and 172.0 MB in the end (delta: 92.3 MB). Free memory was 49.1 MB in the beginning and 57.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 94.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:07,125 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 79.7 MB. Free memory was 49.9 MB in the beginning and 49.9 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:07,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.53 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 48.9 MB in the beginning and 74.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:07,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.12 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 72.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:07,135 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 ms. Allocated memory is still 96.5 MB. Free memory was 72.5 MB in the beginning and 71.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:07,135 INFO L168 Benchmark]: RCFGBuilder took 477.74 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 56.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:07,135 INFO L168 Benchmark]: BuchiAutomizer took 19058.43 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 56.7 MB in the beginning and 57.7 MB in the end (delta: -955.2 kB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:07,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 79.7 MB. Free memory was 49.9 MB in the beginning and 49.9 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.53 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 48.9 MB in the beginning and 74.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.12 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 72.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.78 ms. Allocated memory is still 96.5 MB. Free memory was 72.5 MB in the beginning and 71.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 477.74 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 56.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 19058.43 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 56.7 MB in the beginning and 57.7 MB in the end (delta: -955.2 kB). Peak memory consumption was 89.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: MapEliminator tries to combine Int and (Array Int Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...