./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_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:37,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:08:37,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:08:37,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:08:37,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:08:37,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:08:37,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:08:37,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:08:37,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:08:37,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:08:37,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:08:37,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:08:37,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:08:37,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:08:37,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:08:37,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:08:37,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:08:37,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:08:37,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:08:37,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:08:37,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:08:37,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:08:37,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:08:37,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:08:37,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:08:37,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:08:37,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:08:37,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:08:37,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:08:37,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:08:37,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:08:37,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:08:37,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:08:37,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:08:37,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:08:37,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:08:37,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:08:37,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:08:37,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:08:37,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:08:37,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:08:37,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:08:37,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:08:37,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:08:37,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:08:37,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:08:37,922 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:08:37,922 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:08:37,922 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:08:37,923 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:08:37,923 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:08:37,923 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:08:37,924 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:08:37,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:08:37,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:08:37,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:08:37,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:08:37,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:08:37,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:08:37,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:08:37,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:08:37,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:08:37,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:08:37,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:08:37,927 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:08:37,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:08:37,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:08:37,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:08:37,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:08:37,928 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:08:37,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:08:37,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:08:37,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:08:37,930 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:08:37,931 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:08:37,932 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_de6bb2d1-1659-48ff-af45-bb95413f4453/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b9a71645175fee79e6d6cd797db38ce6044ffb9 [2020-11-29 20:08:38,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:08:38,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:08:38,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:08:38,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:08:38,270 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:08:38,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/../../sv-benchmarks/c/loops/invert_string-1.c [2020-11-29 20:08:38,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/data/f4ef15c1c/032298a1937543088ae5ca1149fcbc26/FLAG955408ed9 [2020-11-29 20:08:38,781 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:08:38,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/sv-benchmarks/c/loops/invert_string-1.c [2020-11-29 20:08:38,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/data/f4ef15c1c/032298a1937543088ae5ca1149fcbc26/FLAG955408ed9 [2020-11-29 20:08:39,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/data/f4ef15c1c/032298a1937543088ae5ca1149fcbc26 [2020-11-29 20:08:39,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:08:39,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:08:39,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:08:39,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:08:39,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:08:39,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d910ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39, skipping insertion in model container [2020-11-29 20:08:39,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:08:39,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:08:39,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:08:39,421 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:08:39,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:08:39,455 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:08:39,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39 WrapperNode [2020-11-29 20:08:39,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:08:39,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:08:39,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:08:39,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:08:39,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:08:39,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:08:39,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:08:39,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:08:39,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... [2020-11-29 20:08:39,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:08:39,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:08:39,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:08:39,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:08:39,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:08:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:08:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:08:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:08:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:08:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:08:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:08:40,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:08:40,032 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-29 20:08:40,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:08:40 BoogieIcfgContainer [2020-11-29 20:08:40,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:08:40,035 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:08:40,035 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:08:40,039 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:08:40,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:08:40,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:08:39" (1/3) ... [2020-11-29 20:08:40,041 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13d36ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:08:40, skipping insertion in model container [2020-11-29 20:08:40,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:08:40,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:08:39" (2/3) ... [2020-11-29 20:08:40,042 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13d36ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:08:40, skipping insertion in model container [2020-11-29 20:08:40,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:08:40,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:08:40" (3/3) ... [2020-11-29 20:08:40,044 INFO L373 chiAutomizerObserver]: Analyzing ICFG invert_string-1.c [2020-11-29 20:08:40,105 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:08:40,105 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:08:40,105 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:08:40,105 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:08:40,106 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:08:40,106 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:08:40,106 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:08:40,106 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:08:40,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-29 20:08:40,142 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 20:08:40,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:40,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:40,148 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 20:08:40,148 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:08:40,148 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:08:40,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-29 20:08:40,152 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 20:08:40,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:40,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:40,153 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 20:08:40,153 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:08:40,161 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 [2020-11-29 20:08:40,161 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 [2020-11-29 20:08:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:40,171 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-29 20:08:40,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:40,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464247902] [2020-11-29 20:08:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:40,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:40,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:40,396 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2020-11-29 20:08:40,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:40,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607106481] [2020-11-29 20:08:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:40,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:40,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:40,415 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:40,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:40,417 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2020-11-29 20:08:40,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:40,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689641283] [2020-11-29 20:08:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:40,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:40,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:40,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:41,241 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-11-29 20:08:41,703 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2020-11-29 20:08:41,719 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:08:41,719 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:08:41,719 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:08:41,719 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:08:41,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:08:41,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:41,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:08:41,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:08:41,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration1_Lasso [2020-11-29 20:08:41,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:08:41,722 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:08:41,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:41,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,151 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-11-29 20:08:42,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:42,783 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:08:42,787 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:08:42,797 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:42,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:42,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:42,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:42,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:42,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:42,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:42,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:42,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:42,836 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 [2020-11-29 20:08:42,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:42,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:42,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:42,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:42,846 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:42,846 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:42,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:42,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:42,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:42,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:42,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:42,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:42,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:42,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:42,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:42,891 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:42,928 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:42,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:42,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:42,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:42,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:42,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:42,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:42,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:42,932 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:42,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:42,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:42,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:42,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:42,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:42,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:42,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:42,958 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:42,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:43,019 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,029 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:43,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:43,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:43,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:43,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,135 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,135 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 [2020-11-29 20:08:43,139 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:43,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,184 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,184 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,194 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:43,242 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:43,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:43,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:43,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:43,276 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,288 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,294 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:43,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,351 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,352 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:43,402 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 [2020-11-29 20:08:43,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,406 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,412 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:08:43,459 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 [2020-11-29 20:08:43,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,466 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,466 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,471 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:43,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,517 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,517 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,521 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,563 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,569 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,569 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,604 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,658 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 [2020-11-29 20:08:43,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,663 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,663 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,669 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,696 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,701 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,701 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,705 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,730 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,735 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,735 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,743 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,766 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,782 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,809 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:43,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:43,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:43,865 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:43,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:43,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:43,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:43,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:43,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:43,896 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:43,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:43,907 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:08:43,970 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-29 20:08:43,970 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_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:43,975 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 [2020-11-29 20:08:43,990 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 20:08:43,991 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:08:43,991 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_1, ULTIMATE.start_main_~i~0) = 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_1 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [1*ULTIMATE.start_main_~#str1~0.offset >= 0] [2020-11-29 20:08:44,207 INFO L297 tatePredicateManager]: 16 out of 17 supporting invariants were superfluous and have been removed [2020-11-29 20:08:44,216 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 20:08:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:44,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:08:44,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:44,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:08:44,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:08:44,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:08:44,386 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 3 states. [2020-11-29 20:08:44,456 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. [2020-11-29 20:08:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 20:08:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:08:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2020-11-29 20:08:44,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:08:44,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:44,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 20:08:44,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:44,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 20:08:44,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:44,463 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 57 transitions. [2020-11-29 20:08:44,467 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 20:08:44,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 17 states and 22 transitions. [2020-11-29 20:08:44,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 20:08:44,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 20:08:44,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2020-11-29 20:08:44,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:08:44,473 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-29 20:08:44,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2020-11-29 20:08:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 20:08:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 20:08:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2020-11-29 20:08:44,493 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-29 20:08:44,493 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-29 20:08:44,494 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:08:44,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2020-11-29 20:08:44,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 20:08:44,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:44,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:44,495 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:08:44,495 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:08:44,495 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 [2020-11-29 20:08:44,496 INFO L796 eck$LassoCheckResult]: Loop: 181#L29-3 assume !!(main_~i~0 >= 0);call main_#t~mem11 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem11, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem11;main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 183#L29-2 main_#t~post10 := main_~i~0;main_~i~0 := main_#t~post10 - 1;havoc main_#t~post10; 181#L29-3 [2020-11-29 20:08:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2020-11-29 20:08:44,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:44,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119285906] [2020-11-29 20:08:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:08:44,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119285906] [2020-11-29 20:08:44,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:08:44,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:08:44,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613174589] [2020-11-29 20:08:44,605 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:08:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1955, now seen corresponding path program 1 times [2020-11-29 20:08:44,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:44,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366773765] [2020-11-29 20:08:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,620 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:44,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:08:44,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:08:44,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:08:44,700 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-11-29 20:08:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:08:44,746 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-29 20:08:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:08:44,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 24 transitions. [2020-11-29 20:08:44,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 20:08:44,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 20 states and 22 transitions. [2020-11-29 20:08:44,750 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 20:08:44,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 20:08:44,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2020-11-29 20:08:44,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:08:44,751 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 20:08:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2020-11-29 20:08:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2020-11-29 20:08:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 20:08:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-29 20:08:44,753 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-29 20:08:44,753 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-29 20:08:44,753 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:08:44,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2020-11-29 20:08:44,754 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 20:08:44,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:44,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:44,754 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:08:44,754 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:08:44,755 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 237#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 232#L17 assume !!(main_~MAX~0 > 0); 225#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 226#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 235#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 236#L22-3 assume !(main_~i~0 < main_~MAX~0); 234#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 227#L29-3 [2020-11-29 20:08:44,755 INFO L796 eck$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 [2020-11-29 20:08:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2020-11-29 20:08:44,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:44,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650752186] [2020-11-29 20:08:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,830 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1955, now seen corresponding path program 2 times [2020-11-29 20:08:44,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:44,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659634804] [2020-11-29 20:08:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,843 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811567, now seen corresponding path program 1 times [2020-11-29 20:08:44,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:44,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229480554] [2020-11-29 20:08:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:44,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:44,932 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:45,659 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 113 [2020-11-29 20:08:46,263 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2020-11-29 20:08:46,272 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:08:46,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:08:46,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:08:46,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:08:46,272 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:08:46,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:46,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:08:46,273 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:08:46,273 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration3_Lasso [2020-11-29 20:08:46,273 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:08:46,273 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:08:46,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,647 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-29 20:08:46,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:46,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:47,099 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:08:47,100 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:47,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,110 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,110 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 [2020-11-29 20:08:47,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,147 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,147 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,154 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:47,196 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,200 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,226 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 [2020-11-29 20:08:47,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,253 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,282 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,282 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,294 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:47,331 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,363 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,385 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,388 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,437 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,440 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,464 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 [2020-11-29 20:08:47,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,501 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,550 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,573 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,577 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,577 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,605 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,611 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,636 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,636 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,638 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:47,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:47,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:47,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,684 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,687 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,690 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,714 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,714 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,718 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,744 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,752 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,783 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,783 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,786 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:47,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:47,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:47,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:47,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:47,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:47,835 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:47,836 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:47,850 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:08:47,897 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2020-11-29 20:08:47,897 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_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:47,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:08:47,901 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 20:08:47,901 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:08:47,902 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 [] [2020-11-29 20:08:47,993 INFO L297 tatePredicateManager]: 18 out of 18 supporting invariants were superfluous and have been removed [2020-11-29 20:08:47,995 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 20:08:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:48,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:08:48,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:48,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:08:48,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:08:48,112 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:08:48,112 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 20:08:48,151 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. [2020-11-29 20:08:48,153 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 [2020-11-29 20:08:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:08:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 20:08:48,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 20:08:48,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:48,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 20:08:48,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:48,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-29 20:08:48,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:48,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-11-29 20:08:48,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:48,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 19 transitions. [2020-11-29 20:08:48,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-29 20:08:48,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-29 20:08:48,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2020-11-29 20:08:48,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:08:48,157 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-29 20:08:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2020-11-29 20:08:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 20:08:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 20:08:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-29 20:08:48,159 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-29 20:08:48,159 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-29 20:08:48,159 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:08:48,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2020-11-29 20:08:48,159 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:48,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:48,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:48,160 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:08:48,160 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 20:08:48,160 INFO L794 eck$LassoCheckResult]: Stem: 398#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 397#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet9, main_#t~post8, main_#t~mem11, main_#t~post12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~post13, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet7 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet7 % 4294967296 % 4294967296 else main_#t~nondet7 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet7; 392#L17 assume !!(main_~MAX~0 > 0); 384#L17-2 call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 385#L22-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet9, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet9; 395#L22-2 main_#t~post8 := main_~i~0;main_~i~0 := 1 + main_#t~post8;havoc main_#t~post8; 396#L22-3 assume !(main_~i~0 < main_~MAX~0); 394#L22-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 386#L29-3 assume !(main_~i~0 >= 0); 387#L29-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 399#L35-3 [2020-11-29 20:08:48,161 INFO L796 eck$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~mem14;havoc main_#t~mem15;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 [2020-11-29 20:08:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811625, now seen corresponding path program 1 times [2020-11-29 20:08:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:48,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280997804] [2020-11-29 20:08:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:08:48,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280997804] [2020-11-29 20:08:48,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:08:48,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:08:48,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441502233] [2020-11-29 20:08:48,194 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:08:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 1 times [2020-11-29 20:08:48,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:48,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99932140] [2020-11-29 20:08:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,208 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:48,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:08:48,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:08:48,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:08:48,334 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-29 20:08:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:08:48,371 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-29 20:08:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:08:48,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2020-11-29 20:08:48,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:48,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 18 transitions. [2020-11-29 20:08:48,374 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-29 20:08:48,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-29 20:08:48,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2020-11-29 20:08:48,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:08:48,374 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-29 20:08:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2020-11-29 20:08:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 20:08:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 20:08:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-29 20:08:48,376 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-29 20:08:48,376 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-29 20:08:48,376 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 20:08:48,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2020-11-29 20:08:48,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:48,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:48,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:48,377 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:08:48,377 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 20:08:48,377 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 [2020-11-29 20:08:48,377 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~mem14;havoc main_#t~mem15;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 [2020-11-29 20:08:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:48,378 INFO L82 PathProgramCache]: Analyzing trace with hash -357814151, now seen corresponding path program 1 times [2020-11-29 20:08:48,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:48,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891729475] [2020-11-29 20:08:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,416 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 2 times [2020-11-29 20:08:48,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:48,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649733680] [2020-11-29 20:08:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,430 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1607635588, now seen corresponding path program 1 times [2020-11-29 20:08:48,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:48,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355612803] [2020-11-29 20:08:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:48,474 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:48,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:49,361 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 133 [2020-11-29 20:08:50,000 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2020-11-29 20:08:50,008 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:08:50,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:08:50,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:08:50,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:08:50,008 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:08:50,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:50,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:08:50,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:08:50,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration5_Lasso [2020-11-29 20:08:50,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:08:50,008 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:08:50,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,438 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-11-29 20:08:50,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:50,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:08:50,946 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:50,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:50,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:50,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:50,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:50,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:50,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:50,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:50,965 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:50,970 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,017 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,057 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,063 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,102 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,106 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,110 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,148 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,150 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,150 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,151 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,152 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,199 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,236 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,239 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,243 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:51,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,297 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:51,301 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:51,326 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:51,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,376 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,376 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,378 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,400 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,403 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,403 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,406 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,429 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 [2020-11-29 20:08:51,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,434 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:51,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,460 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,464 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,492 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,492 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,517 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,520 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,520 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,534 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,558 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,558 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,560 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,581 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,585 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,585 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,609 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:51,612 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,632 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,635 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,635 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,664 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,664 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,689 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:08:51,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:08:51,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:08:51,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,713 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 [2020-11-29 20:08:51,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,719 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,719 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,728 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,751 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,753 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,753 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,756 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,805 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,805 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:51,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:08:51,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:08:51,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:08:51,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:08:51,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:08:51,838 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:08:51,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:08:51,867 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:08:51,905 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-11-29 20:08:51,905 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_de6bb2d1-1659-48ff-af45-bb95413f4453/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) [2020-11-29 20:08:51,908 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 [2020-11-29 20:08:51,911 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 20:08:51,911 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:08:51,911 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 [] [2020-11-29 20:08:52,032 INFO L297 tatePredicateManager]: 16 out of 17 supporting invariants were superfluous and have been removed [2020-11-29 20:08:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:52,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:08:52,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:08:52,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:08:52,290 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 [2020-11-29 20:08:52,290 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 5 Second operand 8 states. [2020-11-29 20:08:52,508 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. [2020-11-29 20:08:52,509 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 [2020-11-29 20:08:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:08:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 27 transitions. [2020-11-29 20:08:52,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 27 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-29 20:08:52,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:52,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 27 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-29 20:08:52,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:52,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 27 transitions. Stem has 12 letters. Loop has 8 letters. [2020-11-29 20:08:52,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:08:52,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 40 transitions. [2020-11-29 20:08:52,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:52,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 21 states and 23 transitions. [2020-11-29 20:08:52,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 20:08:52,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 20:08:52,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 23 transitions. [2020-11-29 20:08:52,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:08:52,514 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-29 20:08:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 23 transitions. [2020-11-29 20:08:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-11-29 20:08:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 20:08:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-29 20:08:52,516 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 20:08:52,516 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 20:08:52,517 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 20:08:52,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2020-11-29 20:08:52,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:52,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:52,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:52,520 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:08:52,520 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 20:08:52,520 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 [2020-11-29 20:08:52,520 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~mem14;havoc main_#t~mem15;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 [2020-11-29 20:08:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:52,521 INFO L82 PathProgramCache]: Analyzing trace with hash -793654437, now seen corresponding path program 2 times [2020-11-29 20:08:52,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:52,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764254884] [2020-11-29 20:08:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:08:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:08:52,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764254884] [2020-11-29 20:08:52,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760793452] [2020-11-29 20:08:52,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de6bb2d1-1659-48ff-af45-bb95413f4453/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 [2020-11-29 20:08:52,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:08:52,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:08:52,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:08:52,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:08:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:08:52,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:08:52,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2020-11-29 20:08:52,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826631817] [2020-11-29 20:08:52,659 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:08:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 3 times [2020-11-29 20:08:52,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:52,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090957988] [2020-11-29 20:08:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:52,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:08:52,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:08:52,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:08:52,792 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. cyclomatic complexity: 5 Second operand 6 states. [2020-11-29 20:08:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:08:52,862 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-29 20:08:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:08:52,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 26 transitions. [2020-11-29 20:08:52,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:52,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 26 transitions. [2020-11-29 20:08:52,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-29 20:08:52,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 20:08:52,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 26 transitions. [2020-11-29 20:08:52,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:08:52,865 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-11-29 20:08:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 26 transitions. [2020-11-29 20:08:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-11-29 20:08:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 20:08:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-29 20:08:52,867 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 20:08:52,867 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 20:08:52,867 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 20:08:52,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2020-11-29 20:08:52,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:08:52,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:08:52,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:08:52,869 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:08:52,869 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 20:08:52,869 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 [2020-11-29 20:08:52,869 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~mem14;havoc main_#t~mem15;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 [2020-11-29 20:08:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1802321405, now seen corresponding path program 3 times [2020-11-29 20:08:52,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:52,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088428321] [2020-11-29 20:08:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,916 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2317836, now seen corresponding path program 4 times [2020-11-29 20:08:52,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:52,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061685220] [2020-11-29 20:08:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,927 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:08:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1451834888, now seen corresponding path program 2 times [2020-11-29 20:08:52,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:08:52,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447647105] [2020-11-29 20:08:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:08:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:08:52,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:08:52,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:08:54,398 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 192 DAG size of output: 154 [2020-11-29 20:08:55,042 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 101 [2020-11-29 20:08:55,045 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:08:55,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:08:55,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:08:55,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:08:55,045 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:08:55,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:08:55,046 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:08:55,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:08:55,046 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration7_Lasso [2020-11-29 20:08:55,046 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:08:55,046 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:08:55,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:08:55,333 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) [2020-11-29 20:08:55,335 INFO L168 Benchmark]: Toolchain (without parser) took 16139.16 ms. Allocated memory was 94.4 MB in the beginning and 197.1 MB in the end (delta: 102.8 MB). Free memory was 61.5 MB in the beginning and 90.7 MB in the end (delta: -29.2 MB). Peak memory consumption was 86.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:08:55,336 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 66.6 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:08:55,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.96 ms. Allocated memory is still 94.4 MB. Free memory was 61.2 MB in the beginning and 71.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:08:55,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.34 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:08:55,337 INFO L168 Benchmark]: Boogie Preprocessor took 44.78 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 68.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:08:55,337 INFO L168 Benchmark]: RCFGBuilder took 494.19 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 54.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:08:55,350 INFO L168 Benchmark]: BuchiAutomizer took 15299.65 ms. Allocated memory was 94.4 MB in the beginning and 197.1 MB in the end (delta: 102.8 MB). Free memory was 54.1 MB in the beginning and 90.7 MB in the end (delta: -36.6 MB). Peak memory consumption was 81.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:08:55,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 66.6 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.96 ms. Allocated memory is still 94.4 MB. Free memory was 61.2 MB in the beginning and 71.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.34 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.78 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 68.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 494.19 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 54.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 15299.65 ms. Allocated memory was 94.4 MB in the beginning and 197.1 MB in the end (delta: 102.8 MB). Free memory was 54.1 MB in the beginning and 90.7 MB in the end (delta: -36.6 MB). Peak memory consumption was 81.2 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...