./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-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_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 46421108dc6473f7bf7bcbb7826a3247c1ccc8d1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:13:24,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:13:24,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:13:24,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:13:24,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:13:24,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:13:24,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:13:24,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:13:24,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:13:24,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:13:24,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:13:24,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:13:24,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:13:24,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:13:24,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:13:24,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:13:24,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:13:24,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:13:24,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:13:24,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:13:24,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:13:24,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:13:24,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:13:24,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:13:24,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:13:24,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:13:24,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:13:24,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:13:24,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:13:24,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:13:24,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:13:24,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:13:24,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:13:24,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:13:24,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:13:24,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:13:24,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:13:24,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:13:24,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:13:24,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:13:24,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:13:24,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:13:24,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:13:24,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:13:24,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:13:24,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:13:24,802 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:13:24,803 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:13:24,803 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:13:24,803 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:13:24,803 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:13:24,803 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:13:24,804 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:13:24,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:13:24,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:13:24,805 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:13:24,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:13:24,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:13:24,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:13:24,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:13:24,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:13:24,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:13:24,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:13:24,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:13:24,807 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:13:24,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:13:24,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:13:24,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:13:24,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:13:24,808 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:13:24,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:13:24,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:13:24,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:13:24,811 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:13:24,813 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:13:24,813 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_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46421108dc6473f7bf7bcbb7826a3247c1ccc8d1 [2020-11-29 23:13:25,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:13:25,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:13:25,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:13:25,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:13:25,118 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:13:25,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2020-11-29 23:13:25,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/data/a17438f04/932fe3c48c6b4ddba45858e2b33f1616/FLAG6be436840 [2020-11-29 23:13:25,735 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:13:25,736 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2020-11-29 23:13:25,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/data/a17438f04/932fe3c48c6b4ddba45858e2b33f1616/FLAG6be436840 [2020-11-29 23:13:26,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/data/a17438f04/932fe3c48c6b4ddba45858e2b33f1616 [2020-11-29 23:13:26,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:13:26,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:13:26,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:26,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:13:26,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:13:26,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94b74da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26, skipping insertion in model container [2020-11-29 23:13:26,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:13:26,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:13:26,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:26,597 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:13:26,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:26,740 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:13:26,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26 WrapperNode [2020-11-29 23:13:26,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:26,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:26,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:13:26,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:13:26,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:26,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:13:26,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:13:26,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:13:26,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... [2020-11-29 23:13:26,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:13:26,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:13:26,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:13:26,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:13:26,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:13:26,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:13:27,347 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:13:27,347 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 23:13:27,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:27 BoogieIcfgContainer [2020-11-29 23:13:27,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:13:27,350 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:13:27,350 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:13:27,354 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:13:27,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:13:27,355 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:13:26" (1/3) ... [2020-11-29 23:13:27,356 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ebc2683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:13:27, skipping insertion in model container [2020-11-29 23:13:27,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:13:27,356 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:26" (2/3) ... [2020-11-29 23:13:27,357 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ebc2683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:13:27, skipping insertion in model container [2020-11-29 23:13:27,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:13:27,357 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:27" (3/3) ... [2020-11-29 23:13:27,358 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrspn-alloca-2.i [2020-11-29 23:13:27,404 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:13:27,404 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:13:27,404 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:13:27,404 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:13:27,404 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:13:27,404 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:13:27,405 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:13:27,405 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:13:27,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-29 23:13:27,436 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-11-29 23:13:27,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:27,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:27,442 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 23:13:27,443 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:13:27,443 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:13:27,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-29 23:13:27,445 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-11-29 23:13:27,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:27,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:27,446 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 23:13:27,446 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:13:27,453 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 19#L528true assume !(main_~length1~0 < 1); 5#L528-2true assume !(main_~length2~0 < 1); 15#L531-1true call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 8#L537-3true [2020-11-29 23:13:27,453 INFO L796 eck$LassoCheckResult]: Loop: 8#L537-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 7#L537-2true main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 8#L537-3true [2020-11-29 23:13:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-11-29 23:13:27,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:27,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317591847] [2020-11-29 23:13:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:27,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:27,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:27,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2020-11-29 23:13:27,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:27,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417544879] [2020-11-29 23:13:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:27,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:27,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:27,642 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2020-11-29 23:13:27,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:27,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450219972] [2020-11-29 23:13:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:27,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:27,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:27,704 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:28,188 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-11-29 23:13:28,314 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:13:28,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:13:28,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:13:28,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:13:28,315 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:13:28,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:28,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:13:28,316 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:13:28,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration1_Lasso [2020-11-29 23:13:28,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:13:28,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:13:28,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,586 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-29 23:13:28,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:28,988 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:13:28,993 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:29,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,016 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,022 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,059 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:29,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,115 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,142 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 [2020-11-29 23:13:29,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,148 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,174 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 [2020-11-29 23:13:29,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,178 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,201 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,222 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,252 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 [2020-11-29 23:13:29,288 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,298 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:29,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,354 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,354 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,363 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:29,460 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,467 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,468 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,474 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:29,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,521 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 [2020-11-29 23:13:29,523 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:29,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:29,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,633 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,634 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,643 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:29,690 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 [2020-11-29 23:13:29,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,692 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:29,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:29,694 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:29,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,743 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:29,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,799 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,799 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,832 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:29,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:29,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:29,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:29,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:29,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:29,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:29,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:29,917 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:13:30,133 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-29 23:13:30,133 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:30,139 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:30,144 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 23:13:30,144 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:13:30,145 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 [] [2020-11-29 23:13:30,199 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-11-29 23:13:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:30,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:13:30,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:13:30,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:30,301 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 23:13:30,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 3 states. [2020-11-29 23:13:30,366 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 3 states. Result 48 states and 67 transitions. Complement of second has 7 states. [2020-11-29 23:13:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 23:13:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:13:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2020-11-29 23:13:30,373 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 23:13:30,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:30,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 23:13:30,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:30,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 23:13:30,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:30,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 67 transitions. [2020-11-29 23:13:30,387 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 23:13:30,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 16 states and 22 transitions. [2020-11-29 23:13:30,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 23:13:30,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 23:13:30,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2020-11-29 23:13:30,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:30,395 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 23:13:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2020-11-29 23:13:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 23:13:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 23:13:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-29 23:13:30,420 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 23:13:30,420 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-29 23:13:30,421 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:13:30,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-11-29 23:13:30,423 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 23:13:30,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:30,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:30,424 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:30,424 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:13:30,425 INFO L794 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 150#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 151#L528 assume !(main_~length1~0 < 1); 142#L528-2 assume !(main_~length2~0 < 1); 143#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 146#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 147#L537-4 main_~i~1 := 0; 148#L541-3 [2020-11-29 23:13:30,425 INFO L796 eck$LassoCheckResult]: Loop: 148#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 155#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 148#L541-3 [2020-11-29 23:13:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2020-11-29 23:13:30,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:30,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669396409] [2020-11-29 23:13:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:30,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:30,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:30,487 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2020-11-29 23:13:30,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:30,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267618364] [2020-11-29 23:13:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:30,504 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:30,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:30,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384784, now seen corresponding path program 1 times [2020-11-29 23:13:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:30,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536834062] [2020-11-29 23:13:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:30,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:30,553 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:30,558 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:30,758 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-29 23:13:30,846 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:13:30,846 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:13:30,846 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:13:30,846 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:13:30,847 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:13:30,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:30,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:13:30,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:13:30,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration2_Lasso [2020-11-29 23:13:30,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:13:30,858 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:13:30,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:30,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:30,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:30,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:30,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:30,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,084 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-29 23:13:31,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:31,508 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:13:31,508 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:31,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:31,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,517 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:31,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:31,518 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:31,553 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 [2020-11-29 23:13:31,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,560 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,560 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 [2020-11-29 23:13:31,566 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:31,617 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:31,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:31,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:31,624 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:31,664 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,668 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,668 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 [2020-11-29 23:13:31,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:31,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,712 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,713 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:31,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:31,757 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,766 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,766 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 [2020-11-29 23:13:31,788 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:31,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,833 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:31,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:31,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,880 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,881 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 [2020-11-29 23:13:31,888 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:31,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:31,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:31,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:31,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:31,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:31,934 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:31,934 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:31,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:13:31,992 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2020-11-29 23:13:31,993 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_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:31,996 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:31,999 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 23:13:32,000 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:13:32,000 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 [] [2020-11-29 23:13:32,059 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-11-29 23:13:32,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:13:32,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:32,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:13:32,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:32,124 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 23:13:32,125 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 23:13:32,154 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 6 states. [2020-11-29 23:13:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 23:13:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:13:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-11-29 23:13:32,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 23:13:32,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:32,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-29 23:13:32,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:32,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-29 23:13:32,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:32,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-11-29 23:13:32,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:13:32,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 17 states and 24 transitions. [2020-11-29 23:13:32,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-29 23:13:32,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-29 23:13:32,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2020-11-29 23:13:32,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:32,159 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-11-29 23:13:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2020-11-29 23:13:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 23:13:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:13:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2020-11-29 23:13:32,161 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-11-29 23:13:32,161 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-11-29 23:13:32,161 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:13:32,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2020-11-29 23:13:32,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:13:32,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:32,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:32,166 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:32,166 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 23:13:32,167 INFO L794 eck$LassoCheckResult]: Stem: 266#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 263#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 264#L528 assume !(main_~length1~0 < 1); 255#L528-2 assume !(main_~length2~0 < 1); 256#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 259#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 260#L537-4 main_~i~1 := 0; 261#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 253#L541-4 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);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 254#L522 [2020-11-29 23:13:32,167 INFO L796 eck$LassoCheckResult]: Loop: 254#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 262#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 267#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 265#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 254#L522 [2020-11-29 23:13:32,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384726, now seen corresponding path program 1 times [2020-11-29 23:13:32,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:32,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853172073] [2020-11-29 23:13:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,204 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 1 times [2020-11-29 23:13:32,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:32,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735529020] [2020-11-29 23:13:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,220 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash -587636803, now seen corresponding path program 1 times [2020-11-29 23:13:32,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:32,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805975231] [2020-11-29 23:13:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:32,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805975231] [2020-11-29 23:13:32,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:32,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 23:13:32,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674046187] [2020-11-29 23:13:32,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:32,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:13:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:13:32,565 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 9 states. [2020-11-29 23:13:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:32,693 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2020-11-29 23:13:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:13:32,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2020-11-29 23:13:32,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:13:32,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 24 transitions. [2020-11-29 23:13:32,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 23:13:32,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-29 23:13:32,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2020-11-29 23:13:32,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:32,696 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-11-29 23:13:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2020-11-29 23:13:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-29 23:13:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:13:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2020-11-29 23:13:32,698 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 23:13:32,698 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 23:13:32,698 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:13:32,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2020-11-29 23:13:32,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:13:32,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:32,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:32,699 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:32,699 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 23:13:32,699 INFO L794 eck$LassoCheckResult]: Stem: 325#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 322#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 323#L528 assume !(main_~length1~0 < 1); 314#L528-2 assume !(main_~length2~0 < 1); 315#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 318#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 319#L537-4 main_~i~1 := 0; 320#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 327#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 328#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 312#L541-4 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);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 313#L522 [2020-11-29 23:13:32,699 INFO L796 eck$LassoCheckResult]: Loop: 313#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 321#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 326#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 324#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 313#L522 [2020-11-29 23:13:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,700 INFO L82 PathProgramCache]: Analyzing trace with hash -2087704584, now seen corresponding path program 1 times [2020-11-29 23:13:32,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:32,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190857369] [2020-11-29 23:13:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,768 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 2 times [2020-11-29 23:13:32,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:32,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423467219] [2020-11-29 23:13:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:32,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:32,801 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:32,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1860214623, now seen corresponding path program 1 times [2020-11-29 23:13:32,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:32,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457506414] [2020-11-29 23:13:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:13:33,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457506414] [2020-11-29 23:13:33,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:33,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:13:33,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893323728] [2020-11-29 23:13:33,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:33,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:13:33,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:13:33,154 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. cyclomatic complexity: 9 Second operand 8 states. [2020-11-29 23:13:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:33,286 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-11-29 23:13:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:13:33,287 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-11-29 23:13:33,288 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 23:13:33,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 36 transitions. [2020-11-29 23:13:33,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-29 23:13:33,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-11-29 23:13:33,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 36 transitions. [2020-11-29 23:13:33,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:33,289 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-11-29 23:13:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 36 transitions. [2020-11-29 23:13:33,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-11-29 23:13:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 23:13:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-29 23:13:33,292 INFO L714 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-29 23:13:33,292 INFO L594 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-29 23:13:33,292 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:13:33,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2020-11-29 23:13:33,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:13:33,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:33,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:33,298 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:33,298 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:13:33,298 INFO L794 eck$LassoCheckResult]: Stem: 395#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 391#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 392#L528 assume !(main_~length1~0 < 1); 381#L528-2 assume !(main_~length2~0 < 1); 382#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 385#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 386#L537-4 main_~i~1 := 0; 388#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 398#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 399#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 379#L541-4 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);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 380#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 394#L520-3 [2020-11-29 23:13:33,299 INFO L796 eck$LassoCheckResult]: Loop: 394#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 400#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 393#L521 assume !(cstrspn_~sc~0 == cstrspn_~c~0); 394#L520-3 [2020-11-29 23:13:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:33,299 INFO L82 PathProgramCache]: Analyzing trace with hash -294332619, now seen corresponding path program 1 times [2020-11-29 23:13:33,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:33,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618052416] [2020-11-29 23:13:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:33,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:33,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:33,351 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash 78613, now seen corresponding path program 1 times [2020-11-29 23:13:33,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:33,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476753919] [2020-11-29 23:13:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:33,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:33,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:33,361 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1860214625, now seen corresponding path program 1 times [2020-11-29 23:13:33,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:33,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107731782] [2020-11-29 23:13:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:33,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:33,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:33,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:34,024 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 117 [2020-11-29 23:13:34,226 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-29 23:13:34,229 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:13:34,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:13:34,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:13:34,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:13:34,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:13:34,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:34,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:13:34,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:13:34,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration5_Lasso [2020-11-29 23:13:34,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:13:34,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:13:34,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,761 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-11-29 23:13:34,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:34,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:35,183 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-11-29 23:13:35,780 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:13:35,780 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:35,790 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:35,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:35,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:35,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:35,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:35,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:35,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:35,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:35,795 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:35,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:35,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:35,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:35,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:35,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:35,845 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:35,845 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:35,859 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:35,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:35,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:35,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:35,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:35,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:35,898 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:35,898 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:35,902 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:35,944 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:35,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:35,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:35,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:35,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:35,949 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:35,949 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:35,952 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:35,973 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:35,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:35,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:35,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:35,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:35,991 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:35,992 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:36,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:13:36,075 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2020-11-29 23:13:36,075 INFO L444 ModelExtractionUtils]: 28 out of 58 variables were initially zero. Simplification set additionally 27 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:36,080 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:13:36,083 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 23:13:36,083 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:13:36,083 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_3, ULTIMATE.start_cstrspn_~spanp~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_3 - 1*ULTIMATE.start_cstrspn_~spanp~0.offset Supporting invariants [] [2020-11-29 23:13:36,190 INFO L297 tatePredicateManager]: 19 out of 20 supporting invariants were superfluous and have been removed [2020-11-29 23:13:36,199 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 23:13:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:36,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:13:36,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:36,326 WARN L261 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:13:36,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:36,397 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 [2020-11-29 23:13:36,397 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 23:13:36,484 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 38 states and 46 transitions. Complement of second has 7 states. [2020-11-29 23:13:36,486 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 [2020-11-29 23:13:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 23:13:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 23:13:36,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-29 23:13:36,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:36,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-29 23:13:36,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:36,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2020-11-29 23:13:36,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:36,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 46 transitions. [2020-11-29 23:13:36,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:13:36,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 24 states and 30 transitions. [2020-11-29 23:13:36,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-29 23:13:36,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 23:13:36,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2020-11-29 23:13:36,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:13:36,490 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2020-11-29 23:13:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2020-11-29 23:13:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-11-29 23:13:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:13:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2020-11-29 23:13:36,492 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-11-29 23:13:36,492 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-11-29 23:13:36,493 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 23:13:36,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 29 transitions. [2020-11-29 23:13:36,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:13:36,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:36,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:36,494 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:36,494 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 23:13:36,494 INFO L794 eck$LassoCheckResult]: Stem: 617#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 611#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 612#L528 assume !(main_~length1~0 < 1); 603#L528-2 assume !(main_~length2~0 < 1); 604#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 607#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 605#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 606#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 608#L537-4 main_~i~1 := 0; 609#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 621#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 622#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 601#L541-4 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);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 602#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 610#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 620#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 613#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 614#L522 [2020-11-29 23:13:36,495 INFO L796 eck$LassoCheckResult]: Loop: 614#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 623#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 618#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 619#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 614#L522 [2020-11-29 23:13:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:36,495 INFO L82 PathProgramCache]: Analyzing trace with hash -796682687, now seen corresponding path program 1 times [2020-11-29 23:13:36,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:36,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938755579] [2020-11-29 23:13:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:36,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:36,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:36,568 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:36,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 3 times [2020-11-29 23:13:36,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:36,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300061690] [2020-11-29 23:13:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:36,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:36,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:36,587 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:36,592 INFO L82 PathProgramCache]: Analyzing trace with hash 477217064, now seen corresponding path program 2 times [2020-11-29 23:13:36,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:36,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597040773] [2020-11-29 23:13:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:13:36,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597040773] [2020-11-29 23:13:36,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766023844] [2020-11-29 23:13:36,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:13:37,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:13:37,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:13:37,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 23:13:37,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:37,097 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-29 23:13:37,098 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-11-29 23:13:37,099 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:13:37,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:13:37,115 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:13:37,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2020-11-29 23:13:37,299 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 [2020-11-29 23:13:37,299 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:13:37,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:13:37,320 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. [2020-11-29 23:13:37,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:63, output treesize:47 [2020-11-29 23:13:37,557 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 23:13:37,558 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-11-29 23:13:37,560 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:13:37,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:13:37,585 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 23:13:37,585 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:61, output treesize:18 [2020-11-29 23:13:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:13:37,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:13:37,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-11-29 23:13:37,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279394289] [2020-11-29 23:13:37,770 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-11-29 23:13:37,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 23:13:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-11-29 23:13:37,814 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. cyclomatic complexity: 10 Second operand 18 states. [2020-11-29 23:13:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:38,653 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-11-29 23:13:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:13:38,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 52 transitions. [2020-11-29 23:13:38,655 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 23:13:38,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 52 transitions. [2020-11-29 23:13:38,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2020-11-29 23:13:38,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-11-29 23:13:38,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 52 transitions. [2020-11-29 23:13:38,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:13:38,656 INFO L691 BuchiCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-11-29 23:13:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 52 transitions. [2020-11-29 23:13:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-11-29 23:13:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 23:13:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-11-29 23:13:38,660 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-11-29 23:13:38,660 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-11-29 23:13:38,660 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 23:13:38,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 49 transitions. [2020-11-29 23:13:38,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:13:38,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:38,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:38,663 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:38,663 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:13:38,664 INFO L794 eck$LassoCheckResult]: Stem: 785#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 780#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 781#L528 assume !(main_~length1~0 < 1); 770#L528-2 assume !(main_~length2~0 < 1); 771#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 774#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 772#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 773#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 775#L537-4 main_~i~1 := 0; 777#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 789#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 790#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 768#L541-4 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);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 769#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 791#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 787#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 788#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 778#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 779#L520-3 [2020-11-29 23:13:38,664 INFO L796 eck$LassoCheckResult]: Loop: 779#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 786#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 782#L521 assume !(cstrspn_~sc~0 == cstrspn_~c~0); 779#L520-3 [2020-11-29 23:13:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1072640524, now seen corresponding path program 3 times [2020-11-29 23:13:38,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:38,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550689924] [2020-11-29 23:13:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:38,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:38,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:38,710 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:38,714 INFO L82 PathProgramCache]: Analyzing trace with hash 78613, now seen corresponding path program 2 times [2020-11-29 23:13:38,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:38,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845769368] [2020-11-29 23:13:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:38,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:38,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:38,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash 477217066, now seen corresponding path program 1 times [2020-11-29 23:13:38,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:38,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992991443] [2020-11-29 23:13:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:38,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:38,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:38,779 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:39,941 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 199 DAG size of output: 160 [2020-11-29 23:13:40,309 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-29 23:13:40,311 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:13:40,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:13:40,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:13:40,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:13:40,312 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:13:40,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:40,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:13:40,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:13:40,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration7_Lasso [2020-11-29 23:13:40,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:13:40,312 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:13:40,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,066 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 104 [2020-11-29 23:13:41,238 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-11-29 23:13:41,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:41,539 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-29 23:13:41,929 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-29 23:13:42,119 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:13:42,236 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:13:42,236 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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) [2020-11-29 23:13:42,258 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:42,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:42,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:42,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:42,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:42,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:42,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:42,266 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:42,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:42,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:42,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:42,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:42,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:42,309 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:42,309 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:42,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:42,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:42,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:42,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:42,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:42,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:42,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:42,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:42,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:42,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:42,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:42,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:42,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:42,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:42,373 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:42,373 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:42,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:42,402 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:42,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:42,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:42,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:42,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:42,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:42,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:42,461 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:13:42,543 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2020-11-29 23:13:42,544 INFO L444 ModelExtractionUtils]: 8 out of 58 variables were initially zero. Simplification set additionally 47 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:42,546 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:13:42,548 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 23:13:42,548 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:13:42,548 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~spanp~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_4) = -1*ULTIMATE.start_cstrspn_~spanp~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_4 Supporting invariants [] [2020-11-29 23:13:42,683 INFO L297 tatePredicateManager]: 31 out of 33 supporting invariants were superfluous and have been removed [2020-11-29 23:13:42,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 23:13:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:42,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:13:42,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:42,827 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:13:42,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:42,870 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 [2020-11-29 23:13:42,870 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-11-29 23:13:42,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16. Second operand 5 states. Result 49 states and 58 transitions. Complement of second has 7 states. [2020-11-29 23:13:42,954 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 [2020-11-29 23:13:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 23:13:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 23:13:42,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 23:13:42,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:42,955 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:13:42,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:43,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:13:43,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:43,079 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:13:43,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:43,112 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 [2020-11-29 23:13:43,112 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-11-29 23:13:43,197 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16. Second operand 5 states. Result 49 states and 60 transitions. Complement of second has 7 states. [2020-11-29 23:13:43,202 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 [2020-11-29 23:13:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 23:13:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2020-11-29 23:13:43,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 23:13:43,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:43,203 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:13:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:43,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:13:43,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:43,295 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:13:43,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:43,322 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 [2020-11-29 23:13:43,322 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-11-29 23:13:43,396 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16. Second operand 5 states. Result 54 states and 64 transitions. Complement of second has 6 states. [2020-11-29 23:13:43,397 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 [2020-11-29 23:13:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 23:13:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2020-11-29 23:13:43,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 23:13:43,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:43,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 23:13:43,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:43,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 18 letters. Loop has 6 letters. [2020-11-29 23:13:43,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:43,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 64 transitions. [2020-11-29 23:13:43,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 23:13:43,400 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 27 states and 33 transitions. [2020-11-29 23:13:43,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 23:13:43,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 23:13:43,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 33 transitions. [2020-11-29 23:13:43,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:13:43,401 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-11-29 23:13:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 33 transitions. [2020-11-29 23:13:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-11-29 23:13:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 23:13:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2020-11-29 23:13:43,407 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-11-29 23:13:43,407 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-11-29 23:13:43,407 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 23:13:43,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2020-11-29 23:13:43,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 23:13:43,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:43,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:43,408 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:43,408 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 23:13:43,408 INFO L794 eck$LassoCheckResult]: Stem: 1359#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1354#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, 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~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 1355#L528 assume !(main_~length1~0 < 1); 1345#L528-2 assume !(main_~length2~0 < 1); 1346#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 1349#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 1347#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 1348#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 1350#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 1363#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 1351#L537-4 main_~i~1 := 0; 1352#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 1361#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 1362#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 1343#L541-4 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);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 1344#L522 [2020-11-29 23:13:43,408 INFO L796 eck$LassoCheckResult]: Loop: 1344#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;havoc cstrspn_#t~mem3;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 1353#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 1360#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset;havoc cstrspn_#t~mem5; 1356#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 1344#L522 [2020-11-29 23:13:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1523394364, now seen corresponding path program 1 times [2020-11-29 23:13:43,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:43,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093143591] [2020-11-29 23:13:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:43,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:43,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:43,438 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:43,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 4 times [2020-11-29 23:13:43,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:43,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632207895] [2020-11-29 23:13:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:43,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:43,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:43,457 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:43,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1430543523, now seen corresponding path program 4 times [2020-11-29 23:13:43,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:43,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586169522] [2020-11-29 23:13:43,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:43,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:43,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:43,507 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:44,674 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 152 DAG size of output: 125 [2020-11-29 23:13:44,951 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-29 23:13:44,954 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:13:44,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:13:44,954 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:13:44,954 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:13:44,954 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:13:44,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:44,954 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:13:44,954 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:13:44,954 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration8_Lasso [2020-11-29 23:13:44,954 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:13:44,954 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:13:44,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:44,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,383 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-11-29 23:13:45,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:45,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:13:46,091 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:13:46,092 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,138 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,164 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,165 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,223 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,248 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,251 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,251 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,253 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,281 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 [2020-11-29 23:13:46,305 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,308 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 [2020-11-29 23:13:46,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 [2020-11-29 23:13:46,374 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 [2020-11-29 23:13:46,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,377 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,377 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 [2020-11-29 23:13:46,403 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,407 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/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 [2020-11-29 23:13:46,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,436 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,440 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,440 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,446 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,477 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,477 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,481 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,529 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 [2020-11-29 23:13:46,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,536 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,546 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:46,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,597 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,597 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,604 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:46,645 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,651 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:13:46,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,709 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,709 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,746 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 23:13:46,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,750 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 23:13:46,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,760 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,788 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,791 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,791 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,794 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,820 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,820 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,828 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:13:46,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,853 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:13:46,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:13:46,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,879 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,879 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,904 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:13:46,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:13:46,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:13:46,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:13:46,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:13:46,913 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:13:46,913 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:13:46,924 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:13:46,986 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2020-11-29 23:13:46,986 INFO L444 ModelExtractionUtils]: 5 out of 31 variables were initially zero. Simplification set additionally 23 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7088e77a-f1e8-4b47-abb1-6ecb55fef8ef/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:13:46,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:13:46,990 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 23:13:46,991 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:13:46,991 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrspn_~p~0.base)_1, ULTIMATE.start_cstrspn_~p~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrspn_~p~0.base)_1 - 1*ULTIMATE.start_cstrspn_~p~0.offset Supporting invariants [] [2020-11-29 23:13:47,054 INFO L297 tatePredicateManager]: 14 out of 14 supporting invariants were superfluous and have been removed [2020-11-29 23:13:47,056 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 23:13:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:47,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:13:47,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:47,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:13:47,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:13:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:47,154 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 23:13:47,154 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 23:13:47,164 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 4 states. [2020-11-29 23:13:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:13:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:13:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2020-11-29 23:13:47,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 23:13:47,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:47,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 19 letters. Loop has 4 letters. [2020-11-29 23:13:47,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:47,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 15 letters. Loop has 8 letters. [2020-11-29 23:13:47,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:13:47,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-29 23:13:47,168 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:13:47,168 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2020-11-29 23:13:47,168 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:13:47,168 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:13:47,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:13:47,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:47,169 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:13:47,169 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:13:47,169 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:13:47,169 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 23:13:47,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:13:47,169 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:13:47,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:13:47,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:13:47 BoogieIcfgContainer [2020-11-29 23:13:47,176 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:13:47,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:13:47,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:13:47,177 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:13:47,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:27" (3/4) ... [2020-11-29 23:13:47,180 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:13:47,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:13:47,182 INFO L168 Benchmark]: Toolchain (without parser) took 21015.48 ms. Allocated memory was 102.8 MB in the beginning and 283.1 MB in the end (delta: 180.4 MB). Free memory was 76.0 MB in the beginning and 223.1 MB in the end (delta: -147.2 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:47,182 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 102.8 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:13:47,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 575.47 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 75.7 MB in the beginning and 97.3 MB in the end (delta: -21.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:47,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.51 ms. Allocated memory is still 132.1 MB. Free memory was 97.3 MB in the beginning and 95.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:47,184 INFO L168 Benchmark]: Boogie Preprocessor took 27.40 ms. Allocated memory is still 132.1 MB. Free memory was 95.6 MB in the beginning and 93.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:47,184 INFO L168 Benchmark]: RCFGBuilder took 506.00 ms. Allocated memory is still 132.1 MB. Free memory was 93.9 MB in the beginning and 76.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:47,185 INFO L168 Benchmark]: BuchiAutomizer took 19826.06 ms. Allocated memory was 132.1 MB in the beginning and 283.1 MB in the end (delta: 151.0 MB). Free memory was 76.7 MB in the beginning and 224.2 MB in the end (delta: -147.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:47,185 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 283.1 MB. Free memory was 224.2 MB in the beginning and 223.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:13:47,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 102.8 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 575.47 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 75.7 MB in the beginning and 97.3 MB in the end (delta: -21.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.51 ms. Allocated memory is still 132.1 MB. Free memory was 97.3 MB in the beginning and 95.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.40 ms. Allocated memory is still 132.1 MB. Free memory was 95.6 MB in the beginning and 93.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 506.00 ms. Allocated memory is still 132.1 MB. Free memory was 93.9 MB in the beginning and 76.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 19826.06 ms. Allocated memory was 132.1 MB in the beginning and 283.1 MB in the end (delta: 151.0 MB). Free memory was 76.7 MB in the beginning and 224.2 MB in the end (delta: -147.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 283.1 MB. Free memory was 224.2 MB in the beginning and 223.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 8 terminating modules (3 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 unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * spanp and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[p] + -1 * p and consists of 3 locations. One nondeterministic module has affine ranking function -1 * spanp + unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 19.7s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 17.1s. Construction of modules took 0.4s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 163 SDtfs, 275 SDslu, 357 SDs, 0 SdLazy, 360 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital251 mio100 ax108 hnf98 lsp87 ukn72 mio100 lsp46 div100 bol100 ite100 ukn100 eq185 hnf87 smp96 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 2 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 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...