./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrspn_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrspn_reverse_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b0714679a57fe7287c2b60684006200e7d793859 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:00:02,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:02,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:02,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:02,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:02,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:02,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:02,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:02,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:02,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:02,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:02,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:02,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:02,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:02,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:02,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:02,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:02,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:02,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:02,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:02,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:02,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:02,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:02,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:02,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:02,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:02,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:02,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:02,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:02,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:02,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:02,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:02,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:02,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:02,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:02,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:02,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:02,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:02,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:02,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:02,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:02,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:00:02,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:02,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:02,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:02,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:02,953 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:02,953 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:00:02,954 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:00:02,954 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:00:02,954 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:00:02,954 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:00:02,955 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:00:02,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:02,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:00:02,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:02,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:02,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:00:02,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:00:02,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:00:02,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:02,957 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:00:02,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:02,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:00:02,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:02,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:02,958 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:00:02,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:02,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:02,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:02,959 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:00:02,961 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:00:02,961 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_fa872f97-c540-4166-a9f7-c4f2c2865c16/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0714679a57fe7287c2b60684006200e7d793859 [2020-11-28 03:00:03,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:03,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:03,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:03,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:03,287 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:03,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/../../sv-benchmarks/c/termination-15/cstrspn_reverse_alloca.i [2020-11-28 03:00:03,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/data/0b4429bec/1c0d03f3aeee4b06821d18509cba9f22/FLAG4b1ec5fb1 [2020-11-28 03:00:03,941 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:03,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/sv-benchmarks/c/termination-15/cstrspn_reverse_alloca.i [2020-11-28 03:00:03,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/data/0b4429bec/1c0d03f3aeee4b06821d18509cba9f22/FLAG4b1ec5fb1 [2020-11-28 03:00:04,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/data/0b4429bec/1c0d03f3aeee4b06821d18509cba9f22 [2020-11-28 03:00:04,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:04,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:04,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:04,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:04,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:04,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7a49eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04, skipping insertion in model container [2020-11-28 03:00:04,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:04,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:04,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:04,660 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:04,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:04,767 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:04,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04 WrapperNode [2020-11-28 03:00:04,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:04,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:04,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:04,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:04,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:04,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:04,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:04,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:04,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:04,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:04,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:04,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:04,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:00:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:00:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:05,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:05,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:05,402 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 03:00:05,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:05 BoogieIcfgContainer [2020-11-28 03:00:05,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:05,405 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:00:05,405 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:00:05,408 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:00:05,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:00:05,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:00:04" (1/3) ... [2020-11-28 03:00:05,415 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60bb99c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:00:05, skipping insertion in model container [2020-11-28 03:00:05,415 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:00:05,415 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04" (2/3) ... [2020-11-28 03:00:05,415 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60bb99c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:00:05, skipping insertion in model container [2020-11-28 03:00:05,415 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:00:05,416 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:05" (3/3) ... [2020-11-28 03:00:05,417 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrspn_reverse_alloca.i [2020-11-28 03:00:05,463 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:00:05,463 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:00:05,464 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:00:05,464 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:05,464 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:05,464 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:00:05,464 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:05,465 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:00:05,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-28 03:00:05,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 03:00:05,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:00:05,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:00:05,516 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:00:05,516 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:00:05,516 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:00:05,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-28 03:00:05,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 03:00:05,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:00:05,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:00:05,519 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:00:05,519 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:00:05,525 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 11#L-1true havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~malloc215.base, main_#t~malloc215.offset, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~ret217, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214; 12#L382true assume !(main_~length1~0 < 1); 15#L382-2true assume !(main_~length2~0 < 1); 9#L385-1true call main_#t~malloc215.base, main_#t~malloc215.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc215.base, main_#t~malloc215.offset;call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem207, cstrspn_#t~post211.base, cstrspn_#t~post211.offset, cstrspn_#t~mem208, cstrspn_#t~mem209, cstrspn_#t~short210, cstrspn_#t~mem212, cstrspn_#t~post205.base, cstrspn_#t~post205.offset, cstrspn_#t~mem206, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 6#L369-4true [2020-11-28 03:00:05,526 INFO L796 eck$LassoCheckResult]: Loop: 6#L369-4true call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 18#L369-1true assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 20#L372-5true assume !true; 4#L372-6true call cstrspn_#t~mem212 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 8#L374true assume !(cstrspn_#t~mem212 != cstrspn_~c~0);havoc cstrspn_#t~mem212; 5#L369-3true cstrspn_#t~post205.base, cstrspn_#t~post205.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post205.base, cstrspn_#t~post205.offset - 1;havoc cstrspn_#t~post205.base, cstrspn_#t~post205.offset; 6#L369-4true [2020-11-28 03:00:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:05,533 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-11-28 03:00:05,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:05,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516477557] [2020-11-28 03:00:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:05,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:05,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:05,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:05,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1454917130, now seen corresponding path program 1 times [2020-11-28 03:00:05,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:05,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803818072] [2020-11-28 03:00:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:05,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803818072] [2020-11-28 03:00:05,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:05,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:05,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597809006] [2020-11-28 03:00:05,908 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 03:00:05,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:05,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:05,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:05,927 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 03:00:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:05,934 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-28 03:00:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:05,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-11-28 03:00:05,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 03:00:05,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 13 states and 17 transitions. [2020-11-28 03:00:05,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-28 03:00:05,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-28 03:00:05,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-11-28 03:00:05,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:00:05,950 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-28 03:00:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-11-28 03:00:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 03:00:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:00:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-11-28 03:00:05,982 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-28 03:00:05,982 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-28 03:00:05,982 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:00:05,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-11-28 03:00:05,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 03:00:05,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:00:05,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:00:05,985 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:00:05,986 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:05,986 INFO L794 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 50#L-1 havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~malloc215.base, main_#t~malloc215.offset, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~ret217, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214; 51#L382 assume !(main_~length1~0 < 1); 52#L382-2 assume !(main_~length2~0 < 1); 49#L385-1 call main_#t~malloc215.base, main_#t~malloc215.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc215.base, main_#t~malloc215.offset;call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem207, cstrspn_#t~post211.base, cstrspn_#t~post211.offset, cstrspn_#t~mem208, cstrspn_#t~mem209, cstrspn_#t~short210, cstrspn_#t~mem212, cstrspn_#t~post205.base, cstrspn_#t~post205.offset, cstrspn_#t~mem206, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 47#L369-4 [2020-11-28 03:00:05,987 INFO L796 eck$LassoCheckResult]: Loop: 47#L369-4 call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 48#L369-1 assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 56#L372-5 call cstrspn_#t~mem208 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := 0 != cstrspn_#t~mem208; 53#L372-1 assume cstrspn_#t~short210;call cstrspn_#t~mem209 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := cstrspn_#t~mem209 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 54#L372-3 assume !cstrspn_#t~short210;havoc cstrspn_#t~mem209;havoc cstrspn_#t~short210;havoc cstrspn_#t~mem208; 44#L372-6 call cstrspn_#t~mem212 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 45#L374 assume !(cstrspn_#t~mem212 != cstrspn_~c~0);havoc cstrspn_#t~mem212; 46#L369-3 cstrspn_#t~post205.base, cstrspn_#t~post205.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post205.base, cstrspn_#t~post205.offset - 1;havoc cstrspn_#t~post205.base, cstrspn_#t~post205.offset; 47#L369-4 [2020-11-28 03:00:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:05,988 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 2 times [2020-11-28 03:00:05,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:05,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916103441] [2020-11-28 03:00:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:06,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:06,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:06,087 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:06,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1927396657, now seen corresponding path program 1 times [2020-11-28 03:00:06,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:06,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282328696] [2020-11-28 03:00:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:06,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:06,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:06,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:06,134 INFO L82 PathProgramCache]: Analyzing trace with hash -102988426, now seen corresponding path program 1 times [2020-11-28 03:00:06,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:06,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710818696] [2020-11-28 03:00:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:06,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:06,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:06,232 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:06,484 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-11-28 03:00:06,966 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2020-11-28 03:00:07,098 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-28 03:00:07,113 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:00:07,115 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:00:07,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:00:07,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:00:07,116 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:00:07,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:07,122 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:00:07,122 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:00:07,122 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn_reverse_alloca.i_Iteration2_Lasso [2020-11-28 03:00:07,123 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:00:07,123 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:00:07,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,532 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-11-28 03:00:07,765 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-11-28 03:00:07,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:07,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:08,539 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-11-28 03:00:08,564 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:00:08,567 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,573 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 [2020-11-28 03:00:08,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,581 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:08,605 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 [2020-11-28 03:00:08,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,617 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:08,617 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:08,622 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:08,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,681 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,685 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:08,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,714 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:08,714 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:08,720 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,749 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:08,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,778 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,813 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) [2020-11-28 03:00:08,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,861 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,893 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:08,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:08,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:08,926 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:08,966 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:08,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:08,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:08,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:08,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:08,975 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:08,975 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:08,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) [2020-11-28 03:00:09,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:09,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:09,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:09,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:09,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:09,041 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:09,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:09,052 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) [2020-11-28 03:00:09,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:09,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:09,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:09,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:09,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:09,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:09,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:09,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:09,104 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:09,146 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:09,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:09,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:09,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:09,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:09,164 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:09,164 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:09,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:09,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:09,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:09,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:09,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:09,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:09,215 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:09,216 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:09,218 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:09,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:09,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:09,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:09,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:09,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:09,259 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:09,259 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:09,283 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:00:09,523 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-11-28 03:00:09,524 INFO L444 ModelExtractionUtils]: 39 out of 52 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:00:09,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:09,537 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:00:09,537 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:00:09,538 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~sc1~0.offset) = 2*ULTIMATE.start_cstrspn_~sc1~0.offset + 1 Supporting invariants [] [2020-11-28 03:00:09,633 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2020-11-28 03:00:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:09,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:00:09,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:09,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:00:09,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:09,797 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:00:09,798 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:00:09,836 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 21 states and 28 transitions. Complement of second has 4 states. [2020-11-28 03:00:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:00:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:00:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2020-11-28 03:00:09,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 8 letters. [2020-11-28 03:00:09,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:09,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 13 letters. Loop has 8 letters. [2020-11-28 03:00:09,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:09,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 16 letters. [2020-11-28 03:00:09,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:09,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2020-11-28 03:00:09,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:00:09,842 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 18 states and 25 transitions. [2020-11-28 03:00:09,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-28 03:00:09,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 03:00:09,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2020-11-28 03:00:09,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:00:09,843 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-28 03:00:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2020-11-28 03:00:09,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:00:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:00:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-11-28 03:00:09,845 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-28 03:00:09,845 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-28 03:00:09,845 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:00:09,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2020-11-28 03:00:09,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:00:09,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:00:09,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:00:09,847 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:09,848 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:00:09,848 INFO L794 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 173#L-1 havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~malloc215.base, main_#t~malloc215.offset, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~ret217, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214; 174#L382 assume !(main_~length1~0 < 1); 175#L382-2 assume !(main_~length2~0 < 1); 172#L385-1 call main_#t~malloc215.base, main_#t~malloc215.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc215.base, main_#t~malloc215.offset;call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem207, cstrspn_#t~post211.base, cstrspn_#t~post211.offset, cstrspn_#t~mem208, cstrspn_#t~mem209, cstrspn_#t~short210, cstrspn_#t~mem212, cstrspn_#t~post205.base, cstrspn_#t~post205.offset, cstrspn_#t~mem206, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 169#L369-4 call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 171#L369-1 assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 181#L372-5 [2020-11-28 03:00:09,848 INFO L796 eck$LassoCheckResult]: Loop: 181#L372-5 call cstrspn_#t~mem208 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := 0 != cstrspn_#t~mem208; 177#L372-1 assume cstrspn_#t~short210;call cstrspn_#t~mem209 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := cstrspn_#t~mem209 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 178#L372-3 assume !!cstrspn_#t~short210;havoc cstrspn_#t~mem209;havoc cstrspn_#t~short210;havoc cstrspn_#t~mem208;cstrspn_#t~post211.base, cstrspn_#t~post211.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post211.base, cstrspn_#t~post211.offset - 1;havoc cstrspn_#t~post211.base, cstrspn_#t~post211.offset; 181#L372-5 [2020-11-28 03:00:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935595, now seen corresponding path program 1 times [2020-11-28 03:00:09,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:09,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948680046] [2020-11-28 03:00:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:09,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:09,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:09,891 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,892 INFO L82 PathProgramCache]: Analyzing trace with hash 58692, now seen corresponding path program 1 times [2020-11-28 03:00:09,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:09,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937286291] [2020-11-28 03:00:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:09,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:09,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:09,905 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1593218778, now seen corresponding path program 1 times [2020-11-28 03:00:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:09,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016797465] [2020-11-28 03:00:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:09,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:09,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:09,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:10,587 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2020-11-28 03:00:10,740 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-28 03:00:10,746 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:00:10,746 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:00:10,746 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:00:10,746 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:00:10,746 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:00:10,746 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:10,746 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:00:10,746 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:00:10,747 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn_reverse_alloca.i_Iteration3_Lasso [2020-11-28 03:00:10,747 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:00:10,747 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:00:10,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:10,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:10,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:10,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:10,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,108 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-11-28 03:00:11,233 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-11-28 03:00:11,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:11,918 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-11-28 03:00:12,048 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:00:12,048 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:00:12,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:12,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:12,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:12,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:12,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:12,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:12,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:12,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:12,069 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:12,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:12,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:12,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:12,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:12,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:12,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:12,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:12,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:12,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:12,129 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:12,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:12,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:12,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:12,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:12,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:12,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:12,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:12,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:00:12,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:12,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:12,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:12,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:12,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:12,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:12,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:12,165 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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 [2020-11-28 03:00:12,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:12,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:12,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:12,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:12,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:12,202 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:12,202 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:12,225 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:00:12,250 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-28 03:00:12,250 INFO L444 ModelExtractionUtils]: 28 out of 49 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:00:12,253 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:12,256 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:00:12,257 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:00:12,257 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~s~0.offset) = 2*ULTIMATE.start_cstrspn_~s~0.offset + 1 Supporting invariants [] [2020-11-28 03:00:12,347 INFO L297 tatePredicateManager]: 12 out of 12 supporting invariants were superfluous and have been removed [2020-11-28 03:00:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:12,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:00:12,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:12,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:00:12,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:12,418 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:00:12,418 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-28 03:00:12,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 43 states and 57 transitions. Complement of second has 5 states. [2020-11-28 03:00:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:00:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:00:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-11-28 03:00:12,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:00:12,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:12,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:00:12,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:12,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:00:12,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:12,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 57 transitions. [2020-11-28 03:00:12,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:00:12,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 40 transitions. [2020-11-28 03:00:12,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:00:12,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:00:12,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 40 transitions. [2020-11-28 03:00:12,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:00:12,453 INFO L691 BuchiCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-11-28 03:00:12,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 40 transitions. [2020-11-28 03:00:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2020-11-28 03:00:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:00:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2020-11-28 03:00:12,456 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 33 transitions. [2020-11-28 03:00:12,456 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 33 transitions. [2020-11-28 03:00:12,456 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:00:12,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 33 transitions. [2020-11-28 03:00:12,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:00:12,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:00:12,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:00:12,458 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:12,458 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:00:12,461 INFO L794 eck$LassoCheckResult]: Stem: 337#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 334#L-1 havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~malloc215.base, main_#t~malloc215.offset, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~ret217, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214; 335#L382 assume !(main_~length1~0 < 1); 336#L382-2 assume !(main_~length2~0 < 1); 333#L385-1 call main_#t~malloc215.base, main_#t~malloc215.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc215.base, main_#t~malloc215.offset;call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem207, cstrspn_#t~post211.base, cstrspn_#t~post211.offset, cstrspn_#t~mem208, cstrspn_#t~mem209, cstrspn_#t~short210, cstrspn_#t~mem212, cstrspn_#t~post205.base, cstrspn_#t~post205.offset, cstrspn_#t~mem206, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 329#L369-4 call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 330#L369-1 assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 344#L372-5 call cstrspn_#t~mem208 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := 0 != cstrspn_#t~mem208; 348#L372-1 assume !cstrspn_#t~short210; 346#L372-3 assume !cstrspn_#t~short210;havoc cstrspn_#t~mem209;havoc cstrspn_#t~short210;havoc cstrspn_#t~mem208; 327#L372-6 call cstrspn_#t~mem212 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 328#L374 assume !(cstrspn_#t~mem212 != cstrspn_~c~0);havoc cstrspn_#t~mem212; 325#L369-3 cstrspn_#t~post205.base, cstrspn_#t~post205.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post205.base, cstrspn_#t~post205.offset - 1;havoc cstrspn_#t~post205.base, cstrspn_#t~post205.offset; 326#L369-4 call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 332#L369-1 assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 342#L372-5 [2020-11-28 03:00:12,462 INFO L796 eck$LassoCheckResult]: Loop: 342#L372-5 call cstrspn_#t~mem208 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := 0 != cstrspn_#t~mem208; 338#L372-1 assume cstrspn_#t~short210;call cstrspn_#t~mem209 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := cstrspn_#t~mem209 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 339#L372-3 assume !!cstrspn_#t~short210;havoc cstrspn_#t~mem209;havoc cstrspn_#t~short210;havoc cstrspn_#t~mem208;cstrspn_#t~post211.base, cstrspn_#t~post211.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post211.base, cstrspn_#t~post211.offset - 1;havoc cstrspn_#t~post211.base, cstrspn_#t~post211.offset; 342#L372-5 [2020-11-28 03:00:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1587378397, now seen corresponding path program 1 times [2020-11-28 03:00:12,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705773252] [2020-11-28 03:00:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:12,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705773252] [2020-11-28 03:00:12,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:12,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:00:12,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623526360] [2020-11-28 03:00:12,550 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:00:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,550 INFO L82 PathProgramCache]: Analyzing trace with hash 58692, now seen corresponding path program 2 times [2020-11-28 03:00:12,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236744199] [2020-11-28 03:00:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,567 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:12,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:12,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:12,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:12,678 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-28 03:00:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:12,790 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2020-11-28 03:00:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:12,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2020-11-28 03:00:12,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:00:12,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 27 states and 35 transitions. [2020-11-28 03:00:12,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:00:12,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:00:12,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-28 03:00:12,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:00:12,794 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:00:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-28 03:00:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-28 03:00:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:00:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-28 03:00:12,797 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-28 03:00:12,797 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-28 03:00:12,797 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:00:12,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 33 transitions. [2020-11-28 03:00:12,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:00:12,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:00:12,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:00:12,804 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:12,804 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:00:12,804 INFO L794 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 406#L-1 havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~malloc215.base, main_#t~malloc215.offset, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~ret217, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214; 407#L382 assume !(main_~length1~0 < 1); 408#L382-2 assume !(main_~length2~0 < 1); 405#L385-1 call main_#t~malloc215.base, main_#t~malloc215.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc215.base, main_#t~malloc215.offset;call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem207, cstrspn_#t~post211.base, cstrspn_#t~post211.offset, cstrspn_#t~mem208, cstrspn_#t~mem209, cstrspn_#t~short210, cstrspn_#t~mem212, cstrspn_#t~post205.base, cstrspn_#t~post205.offset, cstrspn_#t~mem206, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 401#L369-4 call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 402#L369-1 assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 420#L372-5 call cstrspn_#t~mem208 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := 0 != cstrspn_#t~mem208; 419#L372-1 assume cstrspn_#t~short210;call cstrspn_#t~mem209 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := cstrspn_#t~mem209 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 418#L372-3 assume !cstrspn_#t~short210;havoc cstrspn_#t~mem209;havoc cstrspn_#t~short210;havoc cstrspn_#t~mem208; 397#L372-6 call cstrspn_#t~mem212 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 398#L374 assume !(cstrspn_#t~mem212 != cstrspn_~c~0);havoc cstrspn_#t~mem212; 399#L369-3 cstrspn_#t~post205.base, cstrspn_#t~post205.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post205.base, cstrspn_#t~post205.offset - 1;havoc cstrspn_#t~post205.base, cstrspn_#t~post205.offset; 400#L369-4 call cstrspn_#t~mem206 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 404#L369-1 assume !!(0 != cstrspn_#t~mem206);havoc cstrspn_#t~mem206;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem207 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem207;havoc cstrspn_#t~mem207; 414#L372-5 [2020-11-28 03:00:12,805 INFO L796 eck$LassoCheckResult]: Loop: 414#L372-5 call cstrspn_#t~mem208 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := 0 != cstrspn_#t~mem208; 409#L372-1 assume cstrspn_#t~short210;call cstrspn_#t~mem209 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short210 := cstrspn_#t~mem209 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 410#L372-3 assume !!cstrspn_#t~short210;havoc cstrspn_#t~mem209;havoc cstrspn_#t~short210;havoc cstrspn_#t~mem208;cstrspn_#t~post211.base, cstrspn_#t~post211.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post211.base, cstrspn_#t~post211.offset - 1;havoc cstrspn_#t~post211.base, cstrspn_#t~post211.offset; 414#L372-5 [2020-11-28 03:00:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,805 INFO L82 PathProgramCache]: Analyzing trace with hash -187628965, now seen corresponding path program 2 times [2020-11-28 03:00:12,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65545203] [2020-11-28 03:00:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,878 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,881 INFO L82 PathProgramCache]: Analyzing trace with hash 58692, now seen corresponding path program 3 times [2020-11-28 03:00:12,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742847396] [2020-11-28 03:00:12,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,903 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1902015318, now seen corresponding path program 1 times [2020-11-28 03:00:12,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074190926] [2020-11-28 03:00:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:13,842 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 139 [2020-11-28 03:00:14,051 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-11-28 03:00:14,053 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:00:14,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:00:14,054 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:00:14,054 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:00:14,054 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:00:14,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:14,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:00:14,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:00:14,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn_reverse_alloca.i_Iteration5_Lasso [2020-11-28 03:00:14,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:00:14,054 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:00:14,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:14,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,085 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-11-28 03:00:15,239 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-28 03:00:15,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:00:15,930 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-11-28 03:00:16,086 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-11-28 03:00:16,291 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-28 03:00:16,329 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:00:16,329 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,343 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,346 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:16,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,347 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:16,347 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:16,349 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:00:16,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:16,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:16,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,400 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) [2020-11-28 03:00:16,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,450 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:16,450 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:16,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,485 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:16,485 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:16,486 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,511 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:16,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:16,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:16,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,551 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:16,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:16,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:16,556 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,581 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 [2020-11-28 03:00:16,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:00:16,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:00:16,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:00:16,584 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,612 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-11-28 03:00:16,612 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2020-11-28 03:00:16,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,708 INFO L401 nArgumentSynthesizer]: We have 132 Motzkin's Theorem applications. [2020-11-28 03:00:16,708 INFO L402 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2020-11-28 03:00:16,871 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:16,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:16,912 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/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) [2020-11-28 03:00:16,936 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,940 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:16,940 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:16,944 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:16,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:16,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:16,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:16,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:16,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:16,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:16,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:16,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:17,001 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:17,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:17,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:17,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:17,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:17,005 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:17,005 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:17,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:17,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:17,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:17,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:17,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:17,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:17,058 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:17,058 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:17,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:17,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:17,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:17,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:17,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:17,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:17,103 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:17,104 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:17,115 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:17,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:00:17,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:00:17,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:00:17,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:00:17,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:00:17,155 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:00:17,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:00:17,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:00:17,232 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-28 03:00:17,232 INFO L444 ModelExtractionUtils]: 40 out of 52 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa872f97-c540-4166-a9f7-c4f2c2865c16/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:00:17,235 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:00:17,238 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:00:17,239 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:00:17,239 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~s~0.offset) = 2*ULTIMATE.start_cstrspn_~s~0.offset + 1 Supporting invariants [] [2020-11-28 03:00:17,449 INFO L297 tatePredicateManager]: 26 out of 26 supporting invariants were superfluous and have been removed [2020-11-28 03:00:17,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:17,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:00:17,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:17,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:00:17,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:17,517 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:00:17,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 33 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-28 03:00:17,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 33 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-11-28 03:00:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:00:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:00:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-11-28 03:00:17,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-28 03:00:17,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:17,544 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:00:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:17,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:00:17,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:17,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:00:17,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:17,620 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:00:17,620 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 33 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-28 03:00:17,642 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 33 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-11-28 03:00:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:00:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:00:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-11-28 03:00:17,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-28 03:00:17,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:17,650 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:00:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:17,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:00:17,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:17,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:00:17,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:17,718 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:00:17,718 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 33 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-28 03:00:17,751 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 33 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 53 transitions. Complement of second has 4 states. [2020-11-28 03:00:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:00:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:00:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2020-11-28 03:00:17,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-28 03:00:17,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:17,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-28 03:00:17,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:17,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-28 03:00:17,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:00:17,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 53 transitions. [2020-11-28 03:00:17,756 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:00:17,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 0 states and 0 transitions. [2020-11-28 03:00:17,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:00:17,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:00:17,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:00:17,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:00:17,757 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:00:17,759 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:00:17,759 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:00:17,759 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:00:17,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:00:17,760 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:00:17,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:00:17,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:00:17 BoogieIcfgContainer [2020-11-28 03:00:17,766 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:00:17,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:17,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:17,769 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:17,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:05" (3/4) ... [2020-11-28 03:00:17,772 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:00:17,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:17,774 INFO L168 Benchmark]: Toolchain (without parser) took 13538.15 ms. Allocated memory was 100.7 MB in the beginning and 232.8 MB in the end (delta: 132.1 MB). Free memory was 62.9 MB in the beginning and 158.6 MB in the end (delta: -95.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:17,774 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:17,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.73 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 61.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:17,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.63 ms. Allocated memory is still 100.7 MB. Free memory was 60.8 MB in the beginning and 59.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:17,779 INFO L168 Benchmark]: Boogie Preprocessor took 60.60 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 57.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:17,780 INFO L168 Benchmark]: RCFGBuilder took 485.19 ms. Allocated memory is still 100.7 MB. Free memory was 57.3 MB in the beginning and 40.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:17,781 INFO L168 Benchmark]: BuchiAutomizer took 12361.14 ms. Allocated memory was 100.7 MB in the beginning and 232.8 MB in the end (delta: 132.1 MB). Free memory was 40.7 MB in the beginning and 159.6 MB in the end (delta: -119.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:17,783 INFO L168 Benchmark]: Witness Printer took 4.24 ms. Allocated memory is still 232.8 MB. Free memory was 159.6 MB in the beginning and 158.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:17,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 529.73 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 61.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.63 ms. Allocated memory is still 100.7 MB. Free memory was 60.8 MB in the beginning and 59.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.60 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 57.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 485.19 ms. Allocated memory is still 100.7 MB. Free memory was 57.3 MB in the beginning and 40.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12361.14 ms. Allocated memory was 100.7 MB in the beginning and 232.8 MB in the end (delta: 132.1 MB). Free memory was 40.7 MB in the beginning and 159.6 MB in the end (delta: -119.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.24 ms. Allocated memory is still 232.8 MB. Free memory was 159.6 MB in the beginning and 158.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * sc1 + 1 and consists of 3 locations. One deterministic module has affine ranking function 2 * s + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * s + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.3s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 11.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 120 SDtfs, 128 SDslu, 58 SDs, 0 SdLazy, 77 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital279 mio100 ax100 hnf99 lsp107 ukn82 mio100 lsp41 div114 bol100 ite100 ukn100 eq183 hnf82 smp96 dnf516 smp30 tf100 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 263ms VariablesStem: 7 VariablesLoop: 4 DisjunctsStem: 4 DisjunctsLoop: 6 SupportingInvariants: 12 MotzkinApplications: 132 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...