./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/substring-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/substring-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e748b563bb7a11726b28f7957ce1a00b7c8807b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:20:34,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:34,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:34,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:34,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:34,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:34,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:34,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:34,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:34,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:34,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:34,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:34,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:34,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:34,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:34,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:34,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:34,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:34,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:34,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:34,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:34,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:34,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:34,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:34,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:34,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:34,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:34,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:34,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:34,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:34,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:34,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:34,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:34,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:34,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:34,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:34,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:34,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:34,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:34,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:34,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:34,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:20:34,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:34,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:34,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:34,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:34,876 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:34,877 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:20:34,877 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:20:34,877 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:20:34,877 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:20:34,877 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:20:34,878 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:20:34,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:34,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:34,879 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:20:34,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:34,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:34,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:34,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:20:34,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:20:34,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:20:34,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:34,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:34,881 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:20:34,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:34,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:20:34,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:34,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:34,882 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:20:34,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:34,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:34,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:34,884 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:20:34,885 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:20:34,886 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_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e748b563bb7a11726b28f7957ce1a00b7c8807b [2020-11-28 03:20:35,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:35,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:35,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:35,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:35,190 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:35,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/substring-alloca-2.i [2020-11-28 03:20:35,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/data/a92cb043c/0dc619da26fe49b0b59258367e497bf4/FLAG91157e8fe [2020-11-28 03:20:35,893 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:35,893 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/sv-benchmarks/c/array-memsafety/substring-alloca-2.i [2020-11-28 03:20:35,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/data/a92cb043c/0dc619da26fe49b0b59258367e497bf4/FLAG91157e8fe [2020-11-28 03:20:36,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/data/a92cb043c/0dc619da26fe49b0b59258367e497bf4 [2020-11-28 03:20:36,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:36,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:36,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:36,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:36,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:36,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165eb909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36, skipping insertion in model container [2020-11-28 03:20:36,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:36,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:36,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:36,596 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:36,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:36,680 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:36,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36 WrapperNode [2020-11-28 03:20:36,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:36,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:36,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:36,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:36,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:36,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:36,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:36,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:36,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... [2020-11-28 03:20:36,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:36,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:36,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:36,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:36,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:20:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:20:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:20:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:36,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:37,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:37,346 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:20:37,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:37 BoogieIcfgContainer [2020-11-28 03:20:37,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:37,349 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:20:37,349 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:20:37,353 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:20:37,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:20:37,354 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:20:36" (1/3) ... [2020-11-28 03:20:37,355 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dbf57e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:20:37, skipping insertion in model container [2020-11-28 03:20:37,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:20:37,356 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:36" (2/3) ... [2020-11-28 03:20:37,356 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dbf57e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:20:37, skipping insertion in model container [2020-11-28 03:20:37,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:20:37,356 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:37" (3/3) ... [2020-11-28 03:20:37,358 INFO L373 chiAutomizerObserver]: Analyzing ICFG substring-alloca-2.i [2020-11-28 03:20:37,408 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:20:37,408 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:20:37,408 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:20:37,408 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:37,408 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:37,408 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:20:37,409 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:37,409 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:20:37,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-11-28 03:20:37,444 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2020-11-28 03:20:37,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:37,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:37,450 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:20:37,450 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:20:37,450 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:20:37,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-11-28 03:20:37,455 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 11 [2020-11-28 03:20:37,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:37,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:37,456 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:20:37,456 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:20:37,463 INFO L794 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 15#L-1true havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 16#L532true assume !(main_~length1~0 < 1); 18#L532-2true assume !(main_~length2~0 < 1); 11#L535-1true call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 24#L541-3true [2020-11-28 03:20:37,464 INFO L796 eck$LassoCheckResult]: Loop: 24#L541-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 21#L541-2true main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 24#L541-3true [2020-11-28 03:20:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-11-28 03:20:37,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:37,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943174391] [2020-11-28 03:20:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:37,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:37,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:37,675 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:37,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2020-11-28 03:20:37,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:37,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430828556] [2020-11-28 03:20:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:37,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:37,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:37,722 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:37,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2020-11-28 03:20:37,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:37,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451024877] [2020-11-28 03:20:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:37,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:37,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:37,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:38,098 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-11-28 03:20:38,209 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:38,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:38,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:38,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:38,210 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:38,211 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:38,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:38,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:38,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-2.i_Iteration1_Lasso [2020-11-28 03:20:38,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:38,212 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:38,241 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 03:20:38,251 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 03:20:38,254 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 03:20:38,258 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 03:20:38,261 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 03:20:38,266 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 03:20:38,271 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 03:20:38,274 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 03:20:38,278 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 03:20:38,441 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-28 03:20:38,482 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 03:20:38,486 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 03:20:38,491 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 03:20:38,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:38,499 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 03:20:38,507 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 03:20:38,896 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:38,904 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:38,912 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 03:20:38,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:38,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:38,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:38,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:38,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:38,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:38,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:38,921 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:38,965 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 03:20:38,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:38,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:38,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:38,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:38,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:38,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:38,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:38,975 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:39,016 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 03:20:39,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:39,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:39,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:39,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,061 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 03:20:39,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:39,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:39,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:39,069 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:39,096 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 03:20:39,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,102 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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) [2020-11-28 03:20:39,140 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 03:20:39,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,146 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,146 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:39,150 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,178 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 03:20:39,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:39,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:39,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:39,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,215 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 03:20:39,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:39,230 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,259 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 03:20:39,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,267 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:39,272 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:39,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:39,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,374 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 03:20:39,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:39,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:39,447 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 03:20:39,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:39,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:39,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,455 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,497 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 03:20:39,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,506 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,506 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 03:20:39,514 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,539 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 03:20:39,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,543 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,543 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:39,547 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,578 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 03:20:39,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:39,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:39,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:39,582 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:39,613 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 03:20:39,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:39,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:39,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:39,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:39,632 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:39,632 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:39,650 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:39,856 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-28 03:20:39,856 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:39,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:39,870 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:20:39,870 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:39,870 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-28 03:20:39,922 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-11-28 03:20:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:39,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:39,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:39,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:39,993 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 03:20:40,007 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 03:20:40,008 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states. Second operand 3 states. [2020-11-28 03:20:40,062 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states.. Second operand 3 states. Result 57 states and 84 transitions. Complement of second has 7 states. [2020-11-28 03:20:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2020-11-28 03:20:40,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 57 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:20:40,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:40,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 57 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-28 03:20:40,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:40,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 57 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-28 03:20:40,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:40,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 84 transitions. [2020-11-28 03:20:40,077 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-11-28 03:20:40,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 19 states and 26 transitions. [2020-11-28 03:20:40,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 03:20:40,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-28 03:20:40,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2020-11-28 03:20:40,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:20:40,083 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-11-28 03:20:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2020-11-28 03:20:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 03:20:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:20:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-11-28 03:20:40,107 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-11-28 03:20:40,107 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-11-28 03:20:40,108 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:20:40,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2020-11-28 03:20:40,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-11-28 03:20:40,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:40,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:40,109 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:40,110 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:20:40,110 INFO L794 eck$LassoCheckResult]: Stem: 167#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 164#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 165#L532 assume !(main_~length1~0 < 1); 166#L532-2 assume !(main_~length2~0 < 1); 161#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 162#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 154#L541-4 main_~i~1 := 0; 155#L547-3 [2020-11-28 03:20:40,110 INFO L796 eck$LassoCheckResult]: Loop: 155#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 160#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 155#L547-3 [2020-11-28 03:20:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2020-11-28 03:20:40,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:40,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399442663] [2020-11-28 03:20:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:40,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:40,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:40,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2020-11-28 03:20:40,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:40,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488471143] [2020-11-28 03:20:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:40,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:40,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:40,145 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384784, now seen corresponding path program 1 times [2020-11-28 03:20:40,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:40,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4823034] [2020-11-28 03:20:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:40,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:40,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:40,174 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:40,436 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-28 03:20:40,526 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:40,526 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:40,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:40,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:40,527 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:40,527 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:40,527 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:40,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:40,527 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-2.i_Iteration2_Lasso [2020-11-28 03:20:40,527 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:40,527 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:40,531 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 03:20:40,538 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 03:20:40,541 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 03:20:40,549 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 03:20:40,553 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 03:20:40,707 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-28 03:20:40,733 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 03:20:40,737 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 03:20:40,740 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 03:20:40,744 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 03:20:40,748 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 03:20:40,752 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 03:20:40,755 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 03:20:40,759 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 03:20:40,763 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 03:20:41,163 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:41,163 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:41,174 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:41,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:41,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:41,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:41,223 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 03:20:41,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:41,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:41,225 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 03:20:41,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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) [2020-11-28 03:20:41,276 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:41,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,281 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:41,281 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,287 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:41,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:41,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:41,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:41,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,326 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:41,361 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 03:20:41,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,368 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:41,368 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:41,413 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 03:20:41,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:41,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:41,431 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:41,466 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 03:20:41,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:41,473 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,479 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:41,514 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 03:20:41,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:41,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:41,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,518 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:41,553 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 03:20:41,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,557 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:41,557 INFO L402 nArgumentSynthesizer]: A total of 2 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 03:20:41,561 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:41,598 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 03:20:41,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:41,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:41,600 INFO L402 nArgumentSynthesizer]: A total of 0 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 03:20:41,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:41,637 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 03:20:41,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:41,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:41,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:41,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:41,648 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:41,648 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:41,679 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-28 03:20:41,679 INFO L444 ModelExtractionUtils]: 14 out of 22 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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) [2020-11-28 03:20:41,682 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:41,687 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:20:41,687 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:41,688 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~1 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2020-11-28 03:20:41,742 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-11-28 03:20:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:41,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:41,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:41,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:41,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:41,847 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 03:20:41,848 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 03:20:41,848 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-28 03:20:41,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 42 transitions. Complement of second has 6 states. [2020-11-28 03:20:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2020-11-28 03:20:41,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-28 03:20:41,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:41,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-28 03:20:41,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:41,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-28 03:20:41,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:41,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 42 transitions. [2020-11-28 03:20:41,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:41,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 20 states and 28 transitions. [2020-11-28 03:20:41,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-28 03:20:41,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:20:41,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2020-11-28 03:20:41,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:20:41,892 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2020-11-28 03:20:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2020-11-28 03:20:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:20:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:20:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2020-11-28 03:20:41,897 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2020-11-28 03:20:41,897 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2020-11-28 03:20:41,897 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:20:41,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 28 transitions. [2020-11-28 03:20:41,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:41,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:41,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:41,902 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:41,902 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:41,903 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 287#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 288#L532 assume !(main_~length1~0 < 1); 289#L532-2 assume !(main_~length2~0 < 1); 284#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 285#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 276#L541-4 main_~i~1 := 0; 277#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 286#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 279#L517-3 [2020-11-28 03:20:41,903 INFO L796 eck$LassoCheckResult]: Loop: 279#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 274#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 275#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 278#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 291#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 280#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 281#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 279#L517-3 [2020-11-28 03:20:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:41,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384726, now seen corresponding path program 1 times [2020-11-28 03:20:41,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:41,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111265842] [2020-11-28 03:20:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:41,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:41,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:41,951 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:41,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1328860033, now seen corresponding path program 1 times [2020-11-28 03:20:41,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:41,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097582629] [2020-11-28 03:20:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:41,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:41,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:41,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:41,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1515359350, now seen corresponding path program 1 times [2020-11-28 03:20:41,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:41,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657169032] [2020-11-28 03:20:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:42,260 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 03:20:42,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657169032] [2020-11-28 03:20:42,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:42,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:20:42,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036868957] [2020-11-28 03:20:42,468 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-11-28 03:20:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:42,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:20:42,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:20:42,526 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. cyclomatic complexity: 11 Second operand 7 states. [2020-11-28 03:20:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:42,618 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2020-11-28 03:20:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:42,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 37 transitions. [2020-11-28 03:20:42,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:42,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 28 transitions. [2020-11-28 03:20:42,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 03:20:42,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:20:42,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2020-11-28 03:20:42,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:20:42,621 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-11-28 03:20:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2020-11-28 03:20:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-28 03:20:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:20:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2020-11-28 03:20:42,623 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-11-28 03:20:42,623 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-11-28 03:20:42,623 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:20:42,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2020-11-28 03:20:42,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:42,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:42,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:42,625 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:42,625 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:42,625 INFO L794 eck$LassoCheckResult]: Stem: 354#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 351#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 352#L532 assume !(main_~length1~0 < 1); 353#L532-2 assume !(main_~length2~0 < 1); 348#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 349#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 356#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 357#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 340#L541-4 main_~i~1 := 0; 341#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 350#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 343#L517-3 [2020-11-28 03:20:42,625 INFO L796 eck$LassoCheckResult]: Loop: 343#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 338#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 339#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 342#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 355#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 344#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 345#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 343#L517-3 [2020-11-28 03:20:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:42,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 1 times [2020-11-28 03:20:42,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:42,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849589102] [2020-11-28 03:20:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:42,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:42,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:42,652 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1328860033, now seen corresponding path program 2 times [2020-11-28 03:20:42,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:42,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287005405] [2020-11-28 03:20:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:42,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:42,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:42,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:42,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2020169960, now seen corresponding path program 1 times [2020-11-28 03:20:42,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:42,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737776641] [2020-11-28 03:20:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:20:42,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737776641] [2020-11-28 03:20:42,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:42,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:20:42,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567732192] [2020-11-28 03:20:43,104 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-11-28 03:20:43,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:43,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:20:43,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:20:43,166 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. cyclomatic complexity: 10 Second operand 9 states. [2020-11-28 03:20:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:43,332 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-11-28 03:20:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:20:43,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 44 transitions. [2020-11-28 03:20:43,334 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2020-11-28 03:20:43,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 32 states and 42 transitions. [2020-11-28 03:20:43,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-11-28 03:20:43,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-28 03:20:43,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 42 transitions. [2020-11-28 03:20:43,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:20:43,336 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-11-28 03:20:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 42 transitions. [2020-11-28 03:20:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-28 03:20:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:20:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2020-11-28 03:20:43,339 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-11-28 03:20:43,339 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-11-28 03:20:43,339 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:20:43,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2020-11-28 03:20:43,340 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2020-11-28 03:20:43,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:43,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:43,341 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:43,341 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:43,341 INFO L794 eck$LassoCheckResult]: Stem: 433#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 430#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 431#L532 assume !(main_~length1~0 < 1); 432#L532-2 assume !(main_~length2~0 < 1); 426#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 427#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 436#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 437#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 416#L541-4 main_~i~1 := 0; 417#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 428#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 419#L517-3 [2020-11-28 03:20:43,341 INFO L796 eck$LassoCheckResult]: Loop: 419#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 420#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 440#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 434#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 435#L520-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 438#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 444#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 443#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 442#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 441#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 419#L517-3 [2020-11-28 03:20:43,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 2 times [2020-11-28 03:20:43,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:43,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83014488] [2020-11-28 03:20:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:43,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:43,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:43,364 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:43,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1312710103, now seen corresponding path program 1 times [2020-11-28 03:20:43,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:43,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818786075] [2020-11-28 03:20:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:43,374 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:43,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:43,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:43,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1844492576, now seen corresponding path program 1 times [2020-11-28 03:20:43,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:43,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757922837] [2020-11-28 03:20:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:20:43,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757922837] [2020-11-28 03:20:43,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361386617] [2020-11-28 03:20:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:43,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:20:43,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:43,625 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:20:43,626 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-28 03:20:43,626 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:20:43,644 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-28 03:20:43,647 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:20:43,647 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:9, output treesize:5 [2020-11-28 03:20:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:20:43,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:20:43,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2020-11-28 03:20:43,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540239417] [2020-11-28 03:20:44,051 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2020-11-28 03:20:44,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:44,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:20:44,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:20:44,118 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. cyclomatic complexity: 14 Second operand 9 states. [2020-11-28 03:20:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:44,268 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-11-28 03:20:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:20:44,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-28 03:20:44,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:44,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 27 transitions. [2020-11-28 03:20:44,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 03:20:44,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:20:44,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2020-11-28 03:20:44,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:20:44,270 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-11-28 03:20:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2020-11-28 03:20:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-28 03:20:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:20:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2020-11-28 03:20:44,272 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2020-11-28 03:20:44,272 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2020-11-28 03:20:44,273 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:20:44,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2020-11-28 03:20:44,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:44,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:44,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:44,274 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:44,274 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:44,274 INFO L794 eck$LassoCheckResult]: Stem: 579#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 576#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 577#L532 assume !(main_~length1~0 < 1); 578#L532-2 assume !(main_~length2~0 < 1); 573#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 574#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 581#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 582#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 565#L541-4 main_~i~1 := 0; 566#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 571#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 572#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 575#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 568#L517-3 [2020-11-28 03:20:44,274 INFO L796 eck$LassoCheckResult]: Loop: 568#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 563#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 564#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 567#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 580#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 569#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 570#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 568#L517-3 [2020-11-28 03:20:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1066016806, now seen corresponding path program 1 times [2020-11-28 03:20:44,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:44,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037804003] [2020-11-28 03:20:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:44,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:44,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:44,298 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:44,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:44,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1328860033, now seen corresponding path program 3 times [2020-11-28 03:20:44,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:44,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688757502] [2020-11-28 03:20:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:44,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:44,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:44,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:44,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1498710394, now seen corresponding path program 1 times [2020-11-28 03:20:44,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:44,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393600849] [2020-11-28 03:20:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:44,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:44,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:44,345 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:44,475 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-11-28 03:20:45,113 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2020-11-28 03:20:45,450 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-28 03:20:45,454 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:45,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:45,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:45,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:45,455 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:45,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:45,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:45,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:45,455 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-2.i_Iteration6_Lasso [2020-11-28 03:20:45,455 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:45,455 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:45,460 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 03:20:45,475 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 03:20:45,478 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 03:20:45,481 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 03:20:45,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:45,488 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 03:20:45,491 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 03:20:45,496 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 03:20:45,499 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 03:20:45,501 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 03:20:45,504 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 03:20:46,039 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2020-11-28 03:20:46,239 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-11-28 03:20:46,239 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 03:20:46,242 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 03:20:46,245 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 03:20:46,248 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 03:20:46,251 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 03:20:46,256 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 03:20:46,260 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 03:20:46,262 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 03:20:46,265 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 03:20:46,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:46,269 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 03:20:46,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:46,275 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 03:20:46,279 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 03:20:46,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:46,284 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 03:20:46,557 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-11-28 03:20:47,093 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-11-28 03:20:47,132 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:47,132 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,136 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 03:20:47,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,139 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,171 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 03:20:47,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,174 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:47,175 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:47,177 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,198 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 03:20:47,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:47,225 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 03:20:47,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:47,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,255 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,278 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 03:20:47,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,281 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,302 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 03:20:47,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,310 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,331 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:47,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/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 03:20:47,381 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 03:20:47,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:47,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:47,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:47,383 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:47,405 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 03:20:47,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,407 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:47,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:47,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:47,433 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 03:20:47,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,446 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:47,446 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:47,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:47,501 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 03:20:47,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,504 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:47,504 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:47,507 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:47,529 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 03:20:47,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:47,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:47,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:47,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:47,552 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:47,552 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:47,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:47,651 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-11-28 03:20:47,651 INFO L444 ModelExtractionUtils]: 45 out of 64 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:47,656 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:47,661 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:20:47,661 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:47,662 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_substring_~ps~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_3) = -1*ULTIMATE.start_substring_~ps~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_3 Supporting invariants [] [2020-11-28 03:20:47,782 INFO L297 tatePredicateManager]: 16 out of 17 supporting invariants were superfluous and have been removed [2020-11-28 03:20:47,784 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:20:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:47,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:20:47,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:47,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:20:47,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:47,938 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 03:20:47,939 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-28 03:20:47,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-11-28 03:20:48,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 27 states and 36 transitions. Complement of second has 7 states. [2020-11-28 03:20:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2020-11-28 03:20:48,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 13 letters. Loop has 7 letters. [2020-11-28 03:20:48,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:48,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 20 letters. Loop has 7 letters. [2020-11-28 03:20:48,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:48,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 13 letters. Loop has 14 letters. [2020-11-28 03:20:48,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:48,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2020-11-28 03:20:48,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:48,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 34 transitions. [2020-11-28 03:20:48,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-28 03:20:48,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 03:20:48,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2020-11-28 03:20:48,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:48,052 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-11-28 03:20:48,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2020-11-28 03:20:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:20:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:20:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2020-11-28 03:20:48,054 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-11-28 03:20:48,054 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-11-28 03:20:48,054 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:20:48,054 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 34 transitions. [2020-11-28 03:20:48,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:48,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:48,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:48,055 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:48,056 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:48,056 INFO L794 eck$LassoCheckResult]: Stem: 791#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 788#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 789#L532 assume !(main_~length1~0 < 1); 790#L532-2 assume !(main_~length2~0 < 1); 785#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 786#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 794#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 795#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 775#L541-4 main_~i~1 := 0; 776#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 783#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 784#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 787#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 779#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 771#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 772#L520-5 [2020-11-28 03:20:48,056 INFO L796 eck$LassoCheckResult]: Loop: 772#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 777#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 792#L520-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 772#L520-5 [2020-11-28 03:20:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2055034719, now seen corresponding path program 1 times [2020-11-28 03:20:48,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:48,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588648867] [2020-11-28 03:20:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:48,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:48,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:48,119 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:48,123 INFO L82 PathProgramCache]: Analyzing trace with hash 87489, now seen corresponding path program 1 times [2020-11-28 03:20:48,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:48,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910523372] [2020-11-28 03:20:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:48,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:48,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:48,137 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1075534243, now seen corresponding path program 1 times [2020-11-28 03:20:48,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:48,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676052808] [2020-11-28 03:20:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:48,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:48,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:48,178 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:48,328 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-11-28 03:20:49,249 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 130 [2020-11-28 03:20:49,507 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-28 03:20:49,509 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:49,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:49,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:49,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:49,509 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:49,509 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:49,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:49,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:49,510 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-2.i_Iteration7_Lasso [2020-11-28 03:20:49,510 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:49,510 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:49,513 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 03:20:49,516 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 03:20:49,520 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 03:20:49,522 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 03:20:49,524 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 03:20:49,527 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 03:20:49,530 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 03:20:49,532 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 03:20:49,538 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 03:20:50,242 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2020-11-28 03:20:50,577 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-11-28 03:20:50,577 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 03:20:50,581 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 03:20:50,583 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 03:20:50,585 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 03:20:50,589 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 03:20:50,592 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 03:20:50,594 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 03:20:50,597 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 03:20:50,599 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 03:20:50,602 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 03:20:50,604 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 03:20:50,607 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 03:20:50,611 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 03:20:50,613 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 03:20:50,616 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 03:20:50,618 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 03:20:50,621 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 03:20:50,623 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 03:20:50,953 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-11-28 03:20:51,572 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:51,573 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,575 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 03:20:51,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:51,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,577 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:51,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:51,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,599 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 03:20:51,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:51,604 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,640 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 03:20:51,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:51,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:51,643 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:51,644 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,666 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 03:20:51,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:51,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,667 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:51,668 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:51,669 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,690 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 03:20:51,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,692 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,692 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:51,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,724 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 03:20:51,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:51,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:51,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:51,727 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,749 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 03:20:51,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:51,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:51,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:51,752 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:51,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,777 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,777 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:51,780 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,801 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 03:20:51,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,804 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,804 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:51,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,829 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 03:20:51,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,832 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:51,835 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,859 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 03:20:51,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,861 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2020-11-28 03:20:51,861 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:20:51,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,879 INFO L401 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2020-11-28 03:20:51,879 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-28 03:20:51,910 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:51,946 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 03:20:51,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,950 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,950 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:51,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:51,989 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 03:20:51,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:51,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:51,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:51,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:51,995 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:51,995 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:52,002 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:52,034 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 03:20:52,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:52,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:52,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:52,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:52,064 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:52,064 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:52,086 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:52,160 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2020-11-28 03:20:52,160 INFO L444 ModelExtractionUtils]: 24 out of 64 variables were initially zero. Simplification set additionally 37 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:52,164 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:52,166 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:20:52,166 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:52,166 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_substring_~pt~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc14.base)_4) = -1*ULTIMATE.start_substring_~pt~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc14.base)_4 Supporting invariants [] [2020-11-28 03:20:52,285 INFO L297 tatePredicateManager]: 31 out of 32 supporting invariants were superfluous and have been removed [2020-11-28 03:20:52,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:20:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:20:52,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:52,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:52,388 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 03:20:52,389 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-28 03:20:52,389 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 34 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-28 03:20:52,456 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 34 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 48 states and 64 transitions. Complement of second has 7 states. [2020-11-28 03:20:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-11-28 03:20:52,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-28 03:20:52,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:52,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-28 03:20:52,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:52,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-28 03:20:52,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:52,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2020-11-28 03:20:52,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:52,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 36 states and 48 transitions. [2020-11-28 03:20:52,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-28 03:20:52,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-28 03:20:52,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 48 transitions. [2020-11-28 03:20:52,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:52,461 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 48 transitions. [2020-11-28 03:20:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 48 transitions. [2020-11-28 03:20:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-11-28 03:20:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:20:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 03:20:52,463 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:20:52,463 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:20:52,463 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-28 03:20:52,463 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 42 transitions. [2020-11-28 03:20:52,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:52,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:52,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:52,465 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:52,465 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:52,465 INFO L794 eck$LassoCheckResult]: Stem: 1080#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1077#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 1078#L532 assume !(main_~length1~0 < 1); 1079#L532-2 assume !(main_~length2~0 < 1); 1074#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 1075#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 1084#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 1085#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1063#L541-4 main_~i~1 := 0; 1064#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 1072#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 1073#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 1076#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 1069#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1070#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1087#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1082#L520-1 assume !substring_#t~short6; 1083#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 1067#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 1068#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 1071#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1059#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1060#L520-5 [2020-11-28 03:20:52,465 INFO L796 eck$LassoCheckResult]: Loop: 1060#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1065#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 1081#L520-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 1060#L520-5 [2020-11-28 03:20:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1389384631, now seen corresponding path program 1 times [2020-11-28 03:20:52,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032321267] [2020-11-28 03:20:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:20:52,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032321267] [2020-11-28 03:20:52,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:52,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:52,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55196373] [2020-11-28 03:20:52,509 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:20:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash 87489, now seen corresponding path program 2 times [2020-11-28 03:20:52,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687001771] [2020-11-28 03:20:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:52,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:52,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:52,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:52,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:52,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:52,636 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-11-28 03:20:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:52,666 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-11-28 03:20:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:52,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2020-11-28 03:20:52,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:20:52,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 34 states and 44 transitions. [2020-11-28 03:20:52,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-28 03:20:52,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-28 03:20:52,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-11-28 03:20:52,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:52,669 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-11-28 03:20:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-11-28 03:20:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-11-28 03:20:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:20:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-11-28 03:20:52,671 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-11-28 03:20:52,672 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-11-28 03:20:52,672 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-28 03:20:52,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 42 transitions. [2020-11-28 03:20:52,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:52,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:52,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:52,673 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:52,673 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:52,673 INFO L794 eck$LassoCheckResult]: Stem: 1158#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1155#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 1156#L532 assume !(main_~length1~0 < 1); 1157#L532-2 assume !(main_~length2~0 < 1); 1152#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 1153#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 1162#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 1163#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1141#L541-4 main_~i~1 := 0; 1142#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 1150#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 1151#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 1154#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 1145#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1146#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1167#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1166#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 1165#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 1148#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 1149#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 1147#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1137#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1138#L520-5 [2020-11-28 03:20:52,673 INFO L796 eck$LassoCheckResult]: Loop: 1138#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1143#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 1159#L520-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 1138#L520-5 [2020-11-28 03:20:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1446642933, now seen corresponding path program 2 times [2020-11-28 03:20:52,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135743399] [2020-11-28 03:20:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:20:52,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135743399] [2020-11-28 03:20:52,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263337230] [2020-11-28 03:20:52,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:53,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:20:53,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:53,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-28 03:20:53,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:53,043 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 03:20:53,045 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:20:53,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:20:53,049 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:20:53,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-11-28 03:20:53,146 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 21 [2020-11-28 03:20:53,147 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:20:53,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:20:53,159 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-28 03:20:53,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:47, output treesize:31 [2020-11-28 03:20:53,356 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:20:53,357 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2020-11-28 03:20:53,358 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 03:20:53,384 INFO L625 ElimStorePlain]: treesize reduction 8, result has 63.6 percent of original size [2020-11-28 03:20:53,392 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:20:53,392 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2020-11-28 03:20:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:20:53,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:53,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-11-28 03:20:53,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540433732] [2020-11-28 03:20:53,396 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:20:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,397 INFO L82 PathProgramCache]: Analyzing trace with hash 87489, now seen corresponding path program 3 times [2020-11-28 03:20:53,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769036419] [2020-11-28 03:20:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:53,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:53,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:53,405 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:53,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:20:53,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:20:53,530 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. cyclomatic complexity: 15 Second operand 15 states. [2020-11-28 03:20:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:53,986 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-28 03:20:53,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:20:53,986 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-11-28 03:20:53,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:53,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 35 states and 45 transitions. [2020-11-28 03:20:53,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 03:20:53,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 03:20:53,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 45 transitions. [2020-11-28 03:20:53,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:53,988 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-28 03:20:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 45 transitions. [2020-11-28 03:20:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-11-28 03:20:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:20:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2020-11-28 03:20:53,991 INFO L714 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-11-28 03:20:53,991 INFO L594 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-11-28 03:20:53,991 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-28 03:20:53,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 44 transitions. [2020-11-28 03:20:53,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:53,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:53,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:53,993 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:53,993 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:53,993 INFO L794 eck$LassoCheckResult]: Stem: 1336#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1333#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 1334#L532 assume !(main_~length1~0 < 1); 1335#L532-2 assume !(main_~length2~0 < 1); 1330#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 1331#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 1339#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 1340#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 1341#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 1343#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1318#L541-4 main_~i~1 := 0; 1319#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 1328#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 1329#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 1332#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 1323#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1316#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1317#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1322#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 1342#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 1326#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 1327#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 1324#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1314#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1315#L520-5 [2020-11-28 03:20:53,993 INFO L796 eck$LassoCheckResult]: Loop: 1315#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1320#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 1337#L520-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 1315#L520-5 [2020-11-28 03:20:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1546919447, now seen corresponding path program 3 times [2020-11-28 03:20:53,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446387917] [2020-11-28 03:20:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:54,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:54,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:54,067 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash 87489, now seen corresponding path program 4 times [2020-11-28 03:20:54,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500788151] [2020-11-28 03:20:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:54,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:54,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:54,092 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash 721898201, now seen corresponding path program 1 times [2020-11-28 03:20:54,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750567451] [2020-11-28 03:20:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:54,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:54,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:54,186 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:54,295 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-11-28 03:20:55,852 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 236 DAG size of output: 180 [2020-11-28 03:20:56,199 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-11-28 03:20:56,202 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:56,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:56,203 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:56,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:56,203 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:56,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:56,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:56,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:56,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-2.i_Iteration10_Lasso [2020-11-28 03:20:56,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:56,203 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:56,206 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 03:20:56,209 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 03:20:56,212 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 03:20:56,215 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 03:20:56,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:56,221 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 03:20:56,223 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 03:20:57,077 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 112 [2020-11-28 03:20:57,387 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-11-28 03:20:57,388 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 03:20:57,391 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 03:20:57,393 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 03:20:57,395 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 03:20:57,398 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 03:20:57,400 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 03:20:57,403 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 03:20:57,405 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 03:20:57,408 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 03:20:57,410 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 03:20:57,412 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 03:20:57,414 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 03:20:57,417 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 03:20:57,420 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 03:20:57,422 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 03:20:57,430 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 03:20:57,433 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 03:20:57,437 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 03:20:57,441 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 03:20:57,444 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 03:20:57,885 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-11-28 03:20:58,285 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-11-28 03:20:58,878 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-11-28 03:20:58,938 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:58,938 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:58,943 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 03:20:58,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:58,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:58,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:58,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:58,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:58,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:58,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:58,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:58,967 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 03:20:58,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:58,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:58,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:58,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:58,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:58,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:58,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:58,970 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:58,990 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 03:20:58,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:58,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:58,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:58,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:58,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:58,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:58,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:58,993 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,012 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:20:59,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,018 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,039 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 03:20:59,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:59,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:59,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:59,041 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,062 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 03:20:59,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:59,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:59,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:59,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,086 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 03:20:59,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,089 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,089 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,112 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 03:20:59,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,142 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 03:20:59,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,146 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,146 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,149 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,170 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 03:20:59,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,182 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,192 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,213 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 03:20:59,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,216 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,216 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,218 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,238 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 03:20:59,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,243 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,243 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,267 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 03:20:59,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:59,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:59,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:59,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:59,303 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:59,303 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:59,333 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:59,418 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-11-28 03:20:59,418 INFO L444 ModelExtractionUtils]: 10 out of 58 variables were initially zero. Simplification set additionally 45 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42a5df8f-e658-4d4c-bed2-9c8c6d5b8023/bin/uautomizer/z3 Starting monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:59,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:59,424 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:20:59,424 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:59,424 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_5, ULTIMATE.start_substring_~ps2~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_5 - 1*ULTIMATE.start_substring_~ps2~0.offset Supporting invariants [] [2020-11-28 03:20:59,668 INFO L297 tatePredicateManager]: 38 out of 40 supporting invariants were superfluous and have been removed [2020-11-28 03:20:59,674 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:20:59,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:59,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:20:59,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:59,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:20:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:59,817 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 03:20:59,818 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-28 03:20:59,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 15 Second operand 6 states. [2020-11-28 03:20:59,922 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 15. Second operand 6 states. Result 52 states and 66 transitions. Complement of second has 9 states. [2020-11-28 03:20:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 3 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 27 transitions. [2020-11-28 03:20:59,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 27 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-28 03:20:59,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:59,926 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:59,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:20:59,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:21:00,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:00,062 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 03:21:00,062 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-28 03:21:00,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 15 Second operand 6 states. [2020-11-28 03:21:00,162 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 15. Second operand 6 states. Result 52 states and 66 transitions. Complement of second has 9 states. [2020-11-28 03:21:00,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 3 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:21:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:21:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 27 transitions. [2020-11-28 03:21:00,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 27 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-28 03:21:00,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:21:00,164 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:21:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:21:00,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:21:00,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:00,346 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 03:21:00,347 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-28 03:21:00,347 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 15 Second operand 6 states. [2020-11-28 03:21:00,433 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 15. Second operand 6 states. Result 60 states and 78 transitions. Complement of second has 8 states. [2020-11-28 03:21:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 3 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:21:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:21:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2020-11-28 03:21:00,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 35 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-28 03:21:00,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:21:00,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 35 transitions. Stem has 27 letters. Loop has 3 letters. [2020-11-28 03:21:00,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:21:00,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 35 transitions. Stem has 24 letters. Loop has 6 letters. [2020-11-28 03:21:00,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:21:00,435 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 78 transitions. [2020-11-28 03:21:00,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:21:00,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 51 states and 66 transitions. [2020-11-28 03:21:00,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-28 03:21:00,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:21:00,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 66 transitions. [2020-11-28 03:21:00,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:21:00,437 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-11-28 03:21:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 66 transitions. [2020-11-28 03:21:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-11-28 03:21:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:21:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2020-11-28 03:21:00,443 INFO L714 BuchiCegarLoop]: Abstraction has 49 states and 64 transitions. [2020-11-28 03:21:00,443 INFO L594 BuchiCegarLoop]: Abstraction has 49 states and 64 transitions. [2020-11-28 03:21:00,443 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-28 03:21:00,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 64 transitions. [2020-11-28 03:21:00,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:21:00,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:21:00,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:21:00,444 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:00,444 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:21:00,445 INFO L794 eck$LassoCheckResult]: Stem: 2009#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2006#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19, 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~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 2007#L532 assume !(main_~length1~0 < 1); 2008#L532-2 assume !(main_~length2~0 < 1); 2003#L535-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 2004#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 2013#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 2014#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 2016#L541-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 2018#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1990#L541-4 main_~i~1 := 0; 1991#L547-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 2001#L547-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 2002#L547-3 assume !(main_~i~1 < main_~length2~0 - 1); 2005#L547-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 1996#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1997#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 2032#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 2019#L520-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 2017#L520-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 1999#L520-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 2000#L524 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 1998#L517-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1986#L517-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1987#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1993#L520-1 [2020-11-28 03:21:00,445 INFO L796 eck$LassoCheckResult]: Loop: 1993#L520-1 assume !substring_#t~short6; 2010#L520-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 1992#L520-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1993#L520-1 [2020-11-28 03:21:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:00,445 INFO L82 PathProgramCache]: Analyzing trace with hash -709862543, now seen corresponding path program 4 times [2020-11-28 03:21:00,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:00,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011170500] [2020-11-28 03:21:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:00,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:00,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:00,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:21:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:00,485 INFO L82 PathProgramCache]: Analyzing trace with hash 92531, now seen corresponding path program 1 times [2020-11-28 03:21:00,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:00,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383499829] [2020-11-28 03:21:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,496 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 03:21:00,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383499829] [2020-11-28 03:21:00,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:00,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:21:00,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352081056] [2020-11-28 03:21:00,497 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 03:21:00,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:00,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:00,497 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. cyclomatic complexity: 22 Second operand 3 states. [2020-11-28 03:21:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:00,507 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-11-28 03:21:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:00,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 51 transitions. [2020-11-28 03:21:00,508 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:21:00,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2020-11-28 03:21:00,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:21:00,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:21:00,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:21:00,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:21:00,509 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:21:00,509 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:21:00,509 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:21:00,509 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-11-28 03:21:00,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:21:00,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:21:00,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:21:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:21:00 BoogieIcfgContainer [2020-11-28 03:21:00,514 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:21:00,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:00,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:00,514 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:00,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:37" (3/4) ... [2020-11-28 03:21:00,518 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:21:00,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:00,519 INFO L168 Benchmark]: Toolchain (without parser) took 24331.11 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 86.4 MB in the beginning and 276.8 MB in the end (delta: -190.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:00,519 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 113.2 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:00,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.61 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 79.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:00,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.15 ms. Allocated memory is still 113.2 MB. Free memory was 79.2 MB in the beginning and 77.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:00,520 INFO L168 Benchmark]: Boogie Preprocessor took 28.23 ms. Allocated memory is still 113.2 MB. Free memory was 77.3 MB in the beginning and 75.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:00,520 INFO L168 Benchmark]: RCFGBuilder took 593.92 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 57.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:00,521 INFO L168 Benchmark]: BuchiAutomizer took 23164.43 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 57.3 MB in the beginning and 276.8 MB in the end (delta: -219.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:00,521 INFO L168 Benchmark]: Witness Printer took 3.86 ms. Allocated memory is still 343.9 MB. Free memory is still 276.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:00,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 113.2 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 490.61 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 79.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.15 ms. Allocated memory is still 113.2 MB. Free memory was 79.2 MB in the beginning and 77.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.23 ms. Allocated memory is still 113.2 MB. Free memory was 77.3 MB in the beginning and 75.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 593.92 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 57.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 23164.43 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 57.3 MB in the beginning and 276.8 MB in the end (delta: -219.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.86 ms. Allocated memory is still 343.9 MB. Free memory is still 276.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (6 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * i + length2 and consists of 4 locations. One deterministic module has affine ranking function -1 * ps + unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] and consists of 5 locations. One deterministic module has affine ranking function -1 * pt + unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] and consists of 5 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * ps2 and consists of 6 locations. 6 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 23.1s and 12 iterations. TraceHistogramMax:2. Analysis of lassos took 20.5s. Construction of modules took 0.5s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 49 states and ocurred in iteration 10. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 234 SDtfs, 442 SDslu, 495 SDs, 0 SdLazy, 460 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc3 concLT0 SILN0 SILU2 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital294 mio100 ax108 hnf98 lsp88 ukn69 mio100 lsp50 div100 bol100 ite100 ukn100 eq184 hnf90 smp97 dnf131 smp93 tf100 neg98 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 7 VariablesLoop: 4 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 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...