./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/mergeSort.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/mergeSort.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8fd34d4e7b646f05601c5a6dde65077f6ebc1b52 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Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:31:08,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:31:08,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:31:09,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:31:09,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:31:09,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:31:09,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:31:09,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:31:09,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:31:09,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:31:09,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:31:09,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:31:09,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:31:09,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:31:09,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:31:09,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:31:09,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:31:09,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:31:09,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:31:09,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:31:09,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:31:09,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:31:09,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:31:09,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:31:09,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:31:09,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:31:09,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:31:09,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:31:09,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:31:09,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:31:09,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:31:09,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:31:09,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:31:09,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:31:09,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:31:09,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:31:09,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:31:09,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:31:09,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:31:09,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:31:09,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:31:09,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:31:09,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:31:09,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:31:09,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:31:09,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:31:09,201 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:31:09,201 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:31:09,201 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:31:09,202 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:31:09,202 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:31:09,202 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:31:09,204 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:31:09,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:31:09,204 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:31:09,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:31:09,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:31:09,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:31:09,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:31:09,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:31:09,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:31:09,206 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:31:09,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:31:09,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:31:09,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:31:09,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:31:09,208 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:31:09,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:31:09,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:31:09,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:31:09,209 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:31:09,212 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:31:09,212 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_c985f434-4707-4675-8ac8-4a0e87971bf9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fd34d4e7b646f05601c5a6dde65077f6ebc1b52 [2020-11-30 00:31:09,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:31:09,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:31:09,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:31:09,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:31:09,649 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:31:09,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/../../sv-benchmarks/c/termination-recursive-malloc/mergeSort.i [2020-11-30 00:31:09,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/data/0105592f8/85f09020ab0e4b68a2b8cb5cf9d37432/FLAGee47b8b6e [2020-11-30 00:31:10,356 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:31:10,357 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/sv-benchmarks/c/termination-recursive-malloc/mergeSort.i [2020-11-30 00:31:10,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/data/0105592f8/85f09020ab0e4b68a2b8cb5cf9d37432/FLAGee47b8b6e [2020-11-30 00:31:10,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/data/0105592f8/85f09020ab0e4b68a2b8cb5cf9d37432 [2020-11-30 00:31:10,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:31:10,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:31:10,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:10,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:31:10,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:31:10,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:10" (1/1) ... [2020-11-30 00:31:10,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c28cd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:10, skipping insertion in model container [2020-11-30 00:31:10,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:10" (1/1) ... [2020-11-30 00:31:10,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:31:10,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:31:10,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:10,987 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:31:11,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:11,045 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:31:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11 WrapperNode [2020-11-30 00:31:11,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:11,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:11,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:31:11,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:31:11,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:11,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:31:11,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:31:11,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:31:11,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... [2020-11-30 00:31:11,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:31:11,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:31:11,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:31:11,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:31:11,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:31:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure merge_sort [2020-11-30 00:31:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_sort [2020-11-30 00:31:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:31:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:31:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:31:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:31:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:31:11,721 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:31:11,722 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:31:11,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:11 BoogieIcfgContainer [2020-11-30 00:31:11,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:31:11,727 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:31:11,727 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:31:11,730 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:31:11,731 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:31:11,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:31:10" (1/3) ... [2020-11-30 00:31:11,732 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e492acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:31:11, skipping insertion in model container [2020-11-30 00:31:11,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:31:11,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:11" (2/3) ... [2020-11-30 00:31:11,733 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e492acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:31:11, skipping insertion in model container [2020-11-30 00:31:11,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:31:11,738 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:11" (3/3) ... [2020-11-30 00:31:11,741 INFO L373 chiAutomizerObserver]: Analyzing ICFG mergeSort.i [2020-11-30 00:31:11,804 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:31:11,804 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:31:11,804 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:31:11,804 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:31:11,804 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:31:11,804 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:31:11,805 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:31:11,805 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:31:11,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states. [2020-11-30 00:31:11,839 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2020-11-30 00:31:11,839 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:11,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:11,845 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:31:11,846 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:31:11,846 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:31:11,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states. [2020-11-30 00:31:11,849 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2020-11-30 00:31:11,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:11,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:11,850 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:31:11,850 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:31:11,857 INFO L794 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 30#L35true assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 4#L40-3true [2020-11-30 00:31:11,858 INFO L796 eck$LassoCheckResult]: Loop: 4#L40-3true assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 5#L40-2true main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 4#L40-3true [2020-11-30 00:31:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:11,864 INFO L82 PathProgramCache]: Analyzing trace with hash 88447, now seen corresponding path program 1 times [2020-11-30 00:31:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:11,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915357176] [2020-11-30 00:31:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:11,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,026 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:12,030 INFO L82 PathProgramCache]: Analyzing trace with hash 3331, now seen corresponding path program 1 times [2020-11-30 00:31:12,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:12,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421230971] [2020-11-30 00:31:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,070 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash 84999937, now seen corresponding path program 1 times [2020-11-30 00:31:12,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:12,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179284307] [2020-11-30 00:31:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,141 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:12,452 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-11-30 00:31:12,462 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:12,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:12,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:12,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:12,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:12,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:12,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:12,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:12,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration1_Lasso [2020-11-30 00:31:12,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:12,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:12,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:12,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:12,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:12,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:12,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:12,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:13,031 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:13,036 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:13,046 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:13,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,052 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:13,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,055 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:13,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:13,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:13,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,106 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:13,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,157 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:13,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,163 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:13,207 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:13,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:13,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:13,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,258 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:13,258 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:13,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:13,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:13,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:13,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:13,358 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:13,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:13,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:13,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:13,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:13,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:13,376 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,393 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:13,417 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-30 00:31:13,418 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:13,426 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:13,429 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 00:31:13,430 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:13,430 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~a~0.base)_1, ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~a~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_~a~0.base)_1 - 4*ULTIMATE.start_main_~i~1 - 1*ULTIMATE.start_main_~a~0.offset Supporting invariants [] [2020-11-30 00:31:13,481 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 00:31:13,490 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 00:31:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:13,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:31:13,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:13,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:13,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:13,632 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 [2020-11-30 00:31:13,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states. Second operand 3 states. [2020-11-30 00:31:13,721 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states.. Second operand 3 states. Result 59 states and 83 transitions. Complement of second has 9 states. [2020-11-30 00:31:13,724 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 [2020-11-30 00:31:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:31:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2020-11-30 00:31:13,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 43 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-30 00:31:13,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:13,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 43 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:31:13,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:13,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 43 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-30 00:31:13,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:13,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 83 transitions. [2020-11-30 00:31:13,739 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:13,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 26 states and 37 transitions. [2020-11-30 00:31:13,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-11-30 00:31:13,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-30 00:31:13,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2020-11-30 00:31:13,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:31:13,748 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-11-30 00:31:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2020-11-30 00:31:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 00:31:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:31:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2020-11-30 00:31:13,779 INFO L714 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-11-30 00:31:13,780 INFO L594 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-11-30 00:31:13,780 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:31:13,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 37 transitions. [2020-11-30 00:31:13,781 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:13,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:13,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:13,782 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:31:13,782 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:31:13,782 INFO L794 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 159#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 160#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 150#L40-3 assume !(main_~i~1 < main_~n~0); 146#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 164#merge_sortENTRY [2020-11-30 00:31:13,783 INFO L796 eck$LassoCheckResult]: Loop: 164#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 153#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 147#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 164#merge_sortENTRY [2020-11-30 00:31:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash 84999888, now seen corresponding path program 1 times [2020-11-30 00:31:13,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:13,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630260680] [2020-11-30 00:31:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:13,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630260680] [2020-11-30 00:31:13,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:31:13,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:31:13,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835464838] [2020-11-30 00:31:13,847 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:31:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash 30000, now seen corresponding path program 1 times [2020-11-30 00:31:13,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:13,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566079731] [2020-11-30 00:31:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:13,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:13,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:13,895 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:14,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:14,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:31:14,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:31:14,153 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-11-30 00:31:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:14,172 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2020-11-30 00:31:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:31:14,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2020-11-30 00:31:14,176 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:14,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:31:14,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-30 00:31:14,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-30 00:31:14,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-30 00:31:14,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:31:14,179 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:31:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-30 00:31:14,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-30 00:31:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:31:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-11-30 00:31:14,183 INFO L714 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-11-30 00:31:14,183 INFO L594 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-11-30 00:31:14,183 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:31:14,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2020-11-30 00:31:14,184 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:14,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:14,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:14,185 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:14,185 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:31:14,185 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 218#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 219#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 209#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 210#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 211#L40-3 assume !(main_~i~1 < main_~n~0); 206#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 223#merge_sortENTRY [2020-11-30 00:31:14,185 INFO L796 eck$LassoCheckResult]: Loop: 223#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 212#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 204#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 223#merge_sortENTRY [2020-11-30 00:31:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:14,186 INFO L82 PathProgramCache]: Analyzing trace with hash 80563154, now seen corresponding path program 1 times [2020-11-30 00:31:14,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:14,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130155208] [2020-11-30 00:31:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:14,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash 30000, now seen corresponding path program 2 times [2020-11-30 00:31:14,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:14,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922169042] [2020-11-30 00:31:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,241 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -829797441, now seen corresponding path program 1 times [2020-11-30 00:31:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:14,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935596116] [2020-11-30 00:31:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:14,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935596116] [2020-11-30 00:31:14,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678932705] [2020-11-30 00:31:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:14,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:31:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:14,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:31:14,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-30 00:31:14,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373151202] [2020-11-30 00:31:14,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:14,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:31:14,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:31:14,644 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 8 states. [2020-11-30 00:31:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:14,737 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-30 00:31:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:31:14,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 45 transitions. [2020-11-30 00:31:14,742 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:14,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 31 states and 40 transitions. [2020-11-30 00:31:14,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-11-30 00:31:14,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2020-11-30 00:31:14,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 40 transitions. [2020-11-30 00:31:14,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:31:14,746 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 40 transitions. [2020-11-30 00:31:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 40 transitions. [2020-11-30 00:31:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-11-30 00:31:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:31:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-11-30 00:31:14,750 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-11-30 00:31:14,750 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-11-30 00:31:14,750 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:31:14,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 36 transitions. [2020-11-30 00:31:14,758 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:14,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:14,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:14,760 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-30 00:31:14,760 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:31:14,761 INFO L794 eck$LassoCheckResult]: Stem: 334#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 325#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 326#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 315#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 316#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 317#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 318#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 336#L40-3 assume !(main_~i~1 < main_~n~0); 311#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 330#merge_sortENTRY [2020-11-30 00:31:14,761 INFO L796 eck$LassoCheckResult]: Loop: 330#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 319#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 310#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 330#merge_sortENTRY [2020-11-30 00:31:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:14,762 INFO L82 PathProgramCache]: Analyzing trace with hash 111829076, now seen corresponding path program 2 times [2020-11-30 00:31:14,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:14,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143299386] [2020-11-30 00:31:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,807 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash 30000, now seen corresponding path program 3 times [2020-11-30 00:31:14,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:14,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241567259] [2020-11-30 00:31:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,820 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:14,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:14,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1394618371, now seen corresponding path program 2 times [2020-11-30 00:31:14,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:14,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260043350] [2020-11-30 00:31:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:14,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:14,854 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:15,370 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-11-30 00:31:15,741 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-30 00:31:15,821 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:15,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:15,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:15,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:15,822 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:15,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:15,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:15,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:15,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration4_Lasso [2020-11-30 00:31:15,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:15,822 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:15,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:15,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:16,696 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:16,697 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:16,723 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:16,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,775 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:16,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,808 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:16,843 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,847 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:16,874 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,890 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:16,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,930 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:16,959 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:16,961 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:16,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:16,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:16,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:16,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:16,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:16,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:16,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:17,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:17,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:17,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:17,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:17,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:17,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:17,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:17,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:17,039 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:17,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:17,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:17,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:17,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:17,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:17,087 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:17,087 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:17,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:17,157 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-11-30 00:31:17,157 INFO L444 ModelExtractionUtils]: 6 out of 16 variables were initially zero. Simplification set additionally 8 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:17,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:17,174 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 00:31:17,174 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:17,174 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_#in~n) = 1*merge_sort_#in~n Supporting invariants [] [2020-11-30 00:31:17,224 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-11-30 00:31:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:17,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:17,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:17,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:31:17,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:17,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:31:17,407 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:17,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:17,639 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:31:17,639 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-30 00:31:17,737 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 46 states and 58 transitions. Complement of second has 12 states. [2020-11-30 00:31:17,742 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 [2020-11-30 00:31:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:31:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-30 00:31:17,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 00:31:17,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:17,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-30 00:31:17,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:17,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 6 letters. [2020-11-30 00:31:17,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:17,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 58 transitions. [2020-11-30 00:31:17,750 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:17,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 37 states and 49 transitions. [2020-11-30 00:31:17,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-11-30 00:31:17,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-11-30 00:31:17,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 49 transitions. [2020-11-30 00:31:17,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:17,752 INFO L691 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-11-30 00:31:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 49 transitions. [2020-11-30 00:31:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-11-30 00:31:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 00:31:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-30 00:31:17,756 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-30 00:31:17,756 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-30 00:31:17,756 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:31:17,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-30 00:31:17,758 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2020-11-30 00:31:17,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:17,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:17,759 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:17,760 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:17,760 INFO L794 eck$LassoCheckResult]: Stem: 483#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 474#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 475#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 462#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 463#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 464#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 465#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 489#L40-3 assume !(main_~i~1 < main_~n~0); 459#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 479#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 468#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 458#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 485#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 466#L24 assume ~n < 2; 467#L8 assume true; 476#merge_sortEXIT >#86#return; 457#L27-1 [2020-11-30 00:31:17,760 INFO L796 eck$LassoCheckResult]: Loop: 457#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 486#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 488#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 456#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 486#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 488#L24 assume ~n < 2; 472#L8 assume true; 487#merge_sortEXIT >#86#return; 457#L27-1 [2020-11-30 00:31:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744228, now seen corresponding path program 1 times [2020-11-30 00:31:17,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:17,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134254644] [2020-11-30 00:31:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:17,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:17,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:17,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:17,805 INFO L82 PathProgramCache]: Analyzing trace with hash -313790022, now seen corresponding path program 1 times [2020-11-30 00:31:17,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:17,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282493108] [2020-11-30 00:31:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:17,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:17,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:17,827 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1064649429, now seen corresponding path program 1 times [2020-11-30 00:31:17,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:17,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419774144] [2020-11-30 00:31:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:18,128 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-30 00:31:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-30 00:31:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-30 00:31:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 00:31:18,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419774144] [2020-11-30 00:31:18,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307139467] [2020-11-30 00:31:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:18,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:31:18,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:18,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:31:18,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 14 [2020-11-30 00:31:18,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686044814] [2020-11-30 00:31:18,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:18,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 00:31:18,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:31:18,780 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 14 states. [2020-11-30 00:31:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:19,318 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2020-11-30 00:31:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:31:19,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 89 transitions. [2020-11-30 00:31:19,322 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 25 [2020-11-30 00:31:19,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 67 states and 85 transitions. [2020-11-30 00:31:19,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2020-11-30 00:31:19,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-30 00:31:19,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 85 transitions. [2020-11-30 00:31:19,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:19,325 INFO L691 BuchiCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-11-30 00:31:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 85 transitions. [2020-11-30 00:31:19,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2020-11-30 00:31:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-30 00:31:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2020-11-30 00:31:19,334 INFO L714 BuchiCegarLoop]: Abstraction has 64 states and 80 transitions. [2020-11-30 00:31:19,334 INFO L594 BuchiCegarLoop]: Abstraction has 64 states and 80 transitions. [2020-11-30 00:31:19,335 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:31:19,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 64 states and 80 transitions. [2020-11-30 00:31:19,336 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 24 [2020-11-30 00:31:19,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:19,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:19,337 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:19,337 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:19,338 INFO L794 eck$LassoCheckResult]: Stem: 706#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 695#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 696#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 678#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 679#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 680#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 681#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 736#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 720#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 719#L40-3 assume !(main_~i~1 < main_~n~0); 686#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 714#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 685#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 683#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 711#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 682#L24 assume ~n < 2; 684#L8 assume true; 697#merge_sortEXIT >#86#return; 688#L27-1 [2020-11-30 00:31:19,338 INFO L796 eck$LassoCheckResult]: Loop: 688#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 712#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 732#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 689#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 712#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 732#L24 assume ~n < 2; 733#L8 assume true; 737#merge_sortEXIT >#86#return; 688#L27-1 [2020-11-30 00:31:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:19,338 INFO L82 PathProgramCache]: Analyzing trace with hash 691173850, now seen corresponding path program 2 times [2020-11-30 00:31:19,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:19,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836159198] [2020-11-30 00:31:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:19,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:19,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:19,370 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash -313790022, now seen corresponding path program 2 times [2020-11-30 00:31:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:19,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107709317] [2020-11-30 00:31:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:19,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:19,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:19,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:19,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:19,401 INFO L82 PathProgramCache]: Analyzing trace with hash -889748845, now seen corresponding path program 2 times [2020-11-30 00:31:19,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:19,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612895194] [2020-11-30 00:31:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:19,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:19,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:19,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:20,330 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2020-11-30 00:31:20,655 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 00:31:20,764 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:20,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:20,764 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:20,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:20,765 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:20,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:20,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:20,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:20,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration6_Lasso [2020-11-30 00:31:20,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:20,765 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:20,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:20,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:21,443 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:21,443 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,506 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,508 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,509 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,531 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,534 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,558 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,560 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:21,561 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:21,571 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,595 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,598 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:21,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,623 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,624 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,652 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,674 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,677 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,699 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,727 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,729 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,730 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,752 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,755 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,780 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,804 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,827 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 [2020-11-30 00:31:21,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,856 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,880 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:21,902 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,905 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:21,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:21,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:21,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:21,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:21,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:21,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:21,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:21,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:21,983 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:22,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:22,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:22,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:22,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:22,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:22,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:22,030 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:22,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:22,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:22,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:22,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:22,033 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:22,054 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:22,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:22,058 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:22,058 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:22,062 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:22,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,115 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2020-11-30 00:31:22,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:22,120 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2020-11-30 00:31:22,120 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:22,128 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:22,167 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:22,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:22,173 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:22,173 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:22,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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) [2020-11-30 00:31:22,213 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:22,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:22,217 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:22,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:22,231 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:22,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:22,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:22,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:22,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:22,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:22,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:22,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:22,290 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:22,341 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-30 00:31:22,341 INFO L444 ModelExtractionUtils]: 0 out of 25 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:22,344 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:22,348 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2020-11-30 00:31:22,348 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:22,349 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_#in~n) = 1*merge_sort_#in~n Supporting invariants [-6*merge_sort_~n + 6*merge_sort_~m~0 + 5*merge_sort_#in~n >= 0, 5*merge_sort_#in~n - 1 >= 0] [2020-11-30 00:31:22,394 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2020-11-30 00:31:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:22,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:31:22,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:22,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:31:22,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:23,216 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-11-30 00:31:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:23,267 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.9 stem predicates 5 loop predicates [2020-11-30 00:31:23,267 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 64 states and 80 transitions. cyclomatic complexity: 23 Second operand 14 states. [2020-11-30 00:31:25,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 64 states and 80 transitions. cyclomatic complexity: 23. Second operand 14 states. Result 317 states and 436 transitions. Complement of second has 38 states. [2020-11-30 00:31:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 9 stem states 4 non-accepting loop states 2 accepting loop states [2020-11-30 00:31:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:31:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 80 transitions. [2020-11-30 00:31:25,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 80 transitions. Stem has 18 letters. Loop has 8 letters. [2020-11-30 00:31:25,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:25,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 80 transitions. Stem has 26 letters. Loop has 8 letters. [2020-11-30 00:31:25,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:25,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 80 transitions. Stem has 18 letters. Loop has 16 letters. [2020-11-30 00:31:25,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:25,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 436 transitions. [2020-11-30 00:31:25,648 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 88 [2020-11-30 00:31:25,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 240 states and 334 transitions. [2020-11-30 00:31:25,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 172 [2020-11-30 00:31:25,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 176 [2020-11-30 00:31:25,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 240 states and 334 transitions. [2020-11-30 00:31:25,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:25,671 INFO L691 BuchiCegarLoop]: Abstraction has 240 states and 334 transitions. [2020-11-30 00:31:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states and 334 transitions. [2020-11-30 00:31:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 214. [2020-11-30 00:31:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-11-30 00:31:25,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 288 transitions. [2020-11-30 00:31:25,700 INFO L714 BuchiCegarLoop]: Abstraction has 214 states and 288 transitions. [2020-11-30 00:31:25,700 INFO L594 BuchiCegarLoop]: Abstraction has 214 states and 288 transitions. [2020-11-30 00:31:25,700 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 00:31:25,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 288 transitions. [2020-11-30 00:31:25,704 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 78 [2020-11-30 00:31:25,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:25,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:25,706 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:25,706 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:31:25,706 INFO L794 eck$LassoCheckResult]: Stem: 1295#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1270#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 1271#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 1245#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 1246#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 1247#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 1248#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 1249#L40-3 assume !(main_~i~1 < main_~n~0); 1237#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 1281#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 1347#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 1304#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 1305#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 1419#L24 assume ~n < 2; 1418#L8 assume true; 1415#merge_sortEXIT >#86#return; 1251#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 1311#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 1250#L24 assume ~n < 2; 1252#L8 assume true; 1291#merge_sortEXIT >#88#return; 1292#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 1423#L11-3 [2020-11-30 00:31:25,707 INFO L796 eck$LassoCheckResult]: Loop: 1423#L11-3 assume !!(merge_~k~0 < merge_~n); 1424#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 1440#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 1426#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 1423#L11-3 [2020-11-30 00:31:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:25,707 INFO L82 PathProgramCache]: Analyzing trace with hash 340719275, now seen corresponding path program 1 times [2020-11-30 00:31:25,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:25,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511593230] [2020-11-30 00:31:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:25,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:25,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:25,756 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:25,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1388838, now seen corresponding path program 1 times [2020-11-30 00:31:25,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:25,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383157795] [2020-11-30 00:31:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:25,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:25,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:25,787 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash -782974256, now seen corresponding path program 1 times [2020-11-30 00:31:25,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:25,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160161851] [2020-11-30 00:31:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:25,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-30 00:31:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-30 00:31:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:31:25,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160161851] [2020-11-30 00:31:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:31:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:31:25,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397410157] [2020-11-30 00:31:26,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:26,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:31:26,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:31:26,069 INFO L87 Difference]: Start difference. First operand 214 states and 288 transitions. cyclomatic complexity: 98 Second operand 5 states. [2020-11-30 00:31:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:26,211 INFO L93 Difference]: Finished difference Result 346 states and 486 transitions. [2020-11-30 00:31:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:31:26,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 346 states and 486 transitions. [2020-11-30 00:31:26,222 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 136 [2020-11-30 00:31:26,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 346 states to 346 states and 486 transitions. [2020-11-30 00:31:26,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2020-11-30 00:31:26,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 256 [2020-11-30 00:31:26,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 346 states and 486 transitions. [2020-11-30 00:31:26,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:26,249 INFO L691 BuchiCegarLoop]: Abstraction has 346 states and 486 transitions. [2020-11-30 00:31:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states and 486 transitions. [2020-11-30 00:31:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 268. [2020-11-30 00:31:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-11-30 00:31:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 351 transitions. [2020-11-30 00:31:26,307 INFO L714 BuchiCegarLoop]: Abstraction has 268 states and 351 transitions. [2020-11-30 00:31:26,307 INFO L594 BuchiCegarLoop]: Abstraction has 268 states and 351 transitions. [2020-11-30 00:31:26,307 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 00:31:26,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 268 states and 351 transitions. [2020-11-30 00:31:26,310 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 120 [2020-11-30 00:31:26,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:26,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:26,312 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:26,312 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:26,312 INFO L794 eck$LassoCheckResult]: Stem: 1878#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1854#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 1855#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 1826#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 1827#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 1828#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 1829#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 1830#L40-3 assume !(main_~i~1 < main_~n~0); 1818#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 1862#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 1934#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 1887#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 1888#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 2003#L24 assume ~n < 2; 2002#L8 assume true; 2001#merge_sortEXIT >#86#return; 1874#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 1889#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 2076#L24 assume ~n < 2; 2075#L8 assume true; 1873#merge_sortEXIT >#88#return; 1858#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 1859#L11-3 [2020-11-30 00:31:26,313 INFO L796 eck$LassoCheckResult]: Loop: 1859#L11-3 assume !!(merge_~k~0 < merge_~n); 1867#L12 assume !(merge_~j~0 == merge_~n); 1837#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 1839#L14 assume !(merge_#t~mem7 < merge_#t~mem8);merge_#t~post11 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post11;call merge_#t~mem12 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post11, 4);merge_#t~ite13 := merge_#t~mem12; 1864#L14-2 merge_#t~ite14 := merge_#t~ite13; 1850#L13-2 merge_#t~ite15 := merge_#t~ite14; 1851#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 1870#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 1859#L11-3 [2020-11-30 00:31:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash 340719275, now seen corresponding path program 2 times [2020-11-30 00:31:26,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:26,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565285535] [2020-11-30 00:31:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:26,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:26,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:26,364 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:26,365 INFO L82 PathProgramCache]: Analyzing trace with hash -120477233, now seen corresponding path program 1 times [2020-11-30 00:31:26,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:26,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940289726] [2020-11-30 00:31:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:26,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:26,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:26,397 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:26,398 INFO L82 PathProgramCache]: Analyzing trace with hash 389830265, now seen corresponding path program 1 times [2020-11-30 00:31:26,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:26,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905930285] [2020-11-30 00:31:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:26,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:26,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:26,477 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:26,706 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-11-30 00:31:27,344 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2020-11-30 00:31:27,529 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-11-30 00:31:27,761 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-11-30 00:31:28,434 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-11-30 00:31:28,632 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-30 00:31:28,635 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:28,636 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:28,636 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:28,636 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:28,636 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:28,636 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:28,636 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:28,636 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:28,636 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration8_Lasso [2020-11-30 00:31:28,636 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:28,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:28,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:28,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,353 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-11-30 00:31:29,553 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-11-30 00:31:29,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:29,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:30,071 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-11-30 00:31:30,486 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-11-30 00:31:30,711 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-30 00:31:30,969 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-11-30 00:31:30,990 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:30,990 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,018 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,018 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,019 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,046 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,047 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,048 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,048 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,050 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:31,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,127 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,156 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,192 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,223 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,225 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,283 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,286 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,315 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,374 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 [2020-11-30 00:31:31,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,379 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,456 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,536 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,540 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/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 [2020-11-30 00:31:31,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,563 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,585 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,599 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:31,636 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,640 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:31,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,680 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,680 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,707 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,734 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:31,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:31,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:31,737 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,759 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,763 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,764 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,769 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,790 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 [2020-11-30 00:31:31,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,793 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,797 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,818 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 [2020-11-30 00:31:31,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,820 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-11-30 00:31:31,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,850 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2020-11-30 00:31:31,850 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,862 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,885 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,888 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,888 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,892 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,921 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,921 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,926 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,949 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,953 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,953 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,958 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 80 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 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:31,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:31,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:31,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:31,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:31,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:31,982 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:31,982 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:31,985 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 81 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 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:32,006 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 [2020-11-30 00:31:32,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:32,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:32,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:32,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:32,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:32,011 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:32,017 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 82 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 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:32,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:32,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:32,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:32,041 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-30 00:31:32,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:32,168 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2020-11-30 00:31:32,169 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-30 00:31:33,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:35,012 INFO L443 ModelExtractionUtils]: Simplification made 67 calls to the SMT solver. [2020-11-30 00:31:35,012 INFO L444 ModelExtractionUtils]: 102 out of 208 variables were initially zero. Simplification set additionally 102 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:35,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:35,030 INFO L438 nArgumentSynthesizer]: Removed 8 redundant supporting invariants from a total of 8. [2020-11-30 00:31:35,030 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:35,031 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_merge_~a.offset, merge_sort_merge_~i~0, v_rep(select #length merge_sort_merge_~a.base)_1) = -1*merge_sort_merge_~a.offset - 4*merge_sort_merge_~i~0 + 1*v_rep(select #length merge_sort_merge_~a.base)_1 Supporting invariants [] [2020-11-30 00:31:35,099 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-30 00:31:35,101 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 00:31:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:35,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:31:35,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:35,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:31:35,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:35,240 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-30 00:31:35,240 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 268 states and 351 transitions. cyclomatic complexity: 107 Second operand 6 states. [2020-11-30 00:31:35,356 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 268 states and 351 transitions. cyclomatic complexity: 107. Second operand 6 states. Result 724 states and 975 transitions. Complement of second has 14 states. [2020-11-30 00:31:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:31:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:31:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2020-11-30 00:31:35,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 22 letters. Loop has 8 letters. [2020-11-30 00:31:35,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:35,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 30 letters. Loop has 8 letters. [2020-11-30 00:31:35,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:35,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 22 letters. Loop has 16 letters. [2020-11-30 00:31:35,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:35,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 724 states and 975 transitions. [2020-11-30 00:31:35,372 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 208 [2020-11-30 00:31:35,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 724 states to 706 states and 939 transitions. [2020-11-30 00:31:35,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 358 [2020-11-30 00:31:35,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 386 [2020-11-30 00:31:35,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 706 states and 939 transitions. [2020-11-30 00:31:35,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:35,386 INFO L691 BuchiCegarLoop]: Abstraction has 706 states and 939 transitions. [2020-11-30 00:31:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states and 939 transitions. [2020-11-30 00:31:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 515. [2020-11-30 00:31:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-11-30 00:31:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 703 transitions. [2020-11-30 00:31:35,412 INFO L714 BuchiCegarLoop]: Abstraction has 515 states and 703 transitions. [2020-11-30 00:31:35,412 INFO L594 BuchiCegarLoop]: Abstraction has 515 states and 703 transitions. [2020-11-30 00:31:35,412 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 00:31:35,413 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 515 states and 703 transitions. [2020-11-30 00:31:35,417 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 166 [2020-11-30 00:31:35,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:35,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:35,418 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:35,418 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:31:35,419 INFO L794 eck$LassoCheckResult]: Stem: 3052#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3023#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 3024#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 2988#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 2989#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 2990#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 2991#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 2992#L40-3 assume !(main_~i~1 < main_~n~0); 2979#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 3036#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 3124#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 3118#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 3120#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 3125#L24 assume ~n < 2; 3122#L8 assume true; 3117#merge_sortEXIT >#86#return; 3114#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 3115#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 3127#L24 assume ~n < 2; 3128#L8 assume true; 3132#merge_sortEXIT >#88#return; 3111#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 3112#L11-3 assume !!(merge_~k~0 < merge_~n); 3109#L12 [2020-11-30 00:31:35,419 INFO L796 eck$LassoCheckResult]: Loop: 3109#L12 assume !(merge_~j~0 == merge_~n); 3151#L13 assume merge_~i~0 == merge_~m;merge_#t~post5 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post5;call merge_#t~mem6 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post5, 4);merge_#t~ite14 := merge_#t~mem6; 3149#L13-2 merge_#t~ite15 := merge_#t~ite14; 3133#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 3110#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 3108#L11-3 assume !!(merge_~k~0 < merge_~n); 3109#L12 [2020-11-30 00:31:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1972362948, now seen corresponding path program 1 times [2020-11-30 00:31:35,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:35,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483765637] [2020-11-30 00:31:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,520 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1482376367, now seen corresponding path program 1 times [2020-11-30 00:31:35,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:35,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311817989] [2020-11-30 00:31:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,543 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash 426493234, now seen corresponding path program 1 times [2020-11-30 00:31:35,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:35,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916728898] [2020-11-30 00:31:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-30 00:31:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-30 00:31:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:31:35,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916728898] [2020-11-30 00:31:35,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:31:35,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:31:35,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997179545] [2020-11-30 00:31:35,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:35,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:31:35,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:31:35,739 INFO L87 Difference]: Start difference. First operand 515 states and 703 transitions. cyclomatic complexity: 232 Second operand 5 states. [2020-11-30 00:31:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:35,841 INFO L93 Difference]: Finished difference Result 726 states and 976 transitions. [2020-11-30 00:31:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:31:35,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 726 states and 976 transitions. [2020-11-30 00:31:35,852 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 246 [2020-11-30 00:31:35,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 726 states to 726 states and 976 transitions. [2020-11-30 00:31:35,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 384 [2020-11-30 00:31:35,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 384 [2020-11-30 00:31:35,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 726 states and 976 transitions. [2020-11-30 00:31:35,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:35,869 INFO L691 BuchiCegarLoop]: Abstraction has 726 states and 976 transitions. [2020-11-30 00:31:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states and 976 transitions. [2020-11-30 00:31:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 704. [2020-11-30 00:31:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-11-30 00:31:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 941 transitions. [2020-11-30 00:31:35,909 INFO L714 BuchiCegarLoop]: Abstraction has 704 states and 941 transitions. [2020-11-30 00:31:35,909 INFO L594 BuchiCegarLoop]: Abstraction has 704 states and 941 transitions. [2020-11-30 00:31:35,909 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-30 00:31:35,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 704 states and 941 transitions. [2020-11-30 00:31:35,915 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 244 [2020-11-30 00:31:35,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:35,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:35,917 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:35,917 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:35,917 INFO L794 eck$LassoCheckResult]: Stem: 4316#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4286#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 4287#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 4251#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 4252#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 4253#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 4254#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 4255#L40-3 assume !(main_~i~1 < main_~n~0); 4243#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 4298#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 4438#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 4429#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 4430#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 4437#L24 assume ~n < 2; 4435#L8 assume true; 4428#merge_sortEXIT >#86#return; 4424#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 4426#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 4431#L24 assume ~n < 2; 4427#L8 assume true; 4423#merge_sortEXIT >#88#return; 4420#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 4421#L11-3 assume !!(merge_~k~0 < merge_~n); 4411#L12 [2020-11-30 00:31:35,918 INFO L796 eck$LassoCheckResult]: Loop: 4411#L12 assume !(merge_~j~0 == merge_~n); 4476#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 4472#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 4467#L14-2 merge_#t~ite14 := merge_#t~ite13; 4463#L13-2 merge_#t~ite15 := merge_#t~ite14; 4464#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 4419#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 4410#L11-3 assume !!(merge_~k~0 < merge_~n); 4411#L12 [2020-11-30 00:31:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1972362948, now seen corresponding path program 2 times [2020-11-30 00:31:35,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:35,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258527561] [2020-11-30 00:31:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,957 INFO L82 PathProgramCache]: Analyzing trace with hash 233986997, now seen corresponding path program 1 times [2020-11-30 00:31:35,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:35,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381082491] [2020-11-30 00:31:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:35,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:35,981 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:35,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash -857421960, now seen corresponding path program 1 times [2020-11-30 00:31:35,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:35,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382261293] [2020-11-30 00:31:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:36,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:36,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:36,039 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:36,206 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 00:31:36,919 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2020-11-30 00:31:37,152 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-11-30 00:31:37,702 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-11-30 00:31:37,844 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-30 00:31:37,846 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:37,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:37,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:37,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:37,847 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:37,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:37,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:37,847 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:37,847 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration10_Lasso [2020-11-30 00:31:37,847 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:37,847 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:37,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:37,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:37,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:37,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:37,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:37,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:37,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,364 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 117 [2020-11-30 00:31:38,534 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-11-30 00:31:38,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:38,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:39,056 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-11-30 00:31:39,421 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-30 00:31:39,637 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-30 00:31:39,949 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-11-30 00:31:40,058 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:40,058 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 84 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 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:40,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:40,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:40,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:40,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 85 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 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:40,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:40,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,094 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:40,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:40,098 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 86 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 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,119 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:40,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:40,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,122 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:40,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:40,123 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 87 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 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,144 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,146 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:40,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:40,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,147 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:40,147 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:40,148 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 88 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 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,168 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:40,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:40,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:40,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:40,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 89 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 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:40,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:40,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,194 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:40,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:40,195 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 90 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 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:40,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:40,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:40,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:40,220 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-30 00:31:40,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:40,351 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2020-11-30 00:31:40,351 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-30 00:31:41,032 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:42,904 INFO L443 ModelExtractionUtils]: Simplification made 66 calls to the SMT solver. [2020-11-30 00:31:42,904 INFO L444 ModelExtractionUtils]: 96 out of 208 variables were initially zero. Simplification set additionally 108 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 91 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 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:42,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:31:42,913 INFO L438 nArgumentSynthesizer]: Removed 8 redundant supporting invariants from a total of 8. [2020-11-30 00:31:42,913 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:42,913 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_merge_~i~0, v_rep(select #length merge_sort_merge_~a.base)_2, merge_sort_merge_~j~0) = 2*merge_sort_merge_~i~0 + 1*v_rep(select #length merge_sort_merge_~a.base)_2 - 2*merge_sort_merge_~j~0 Supporting invariants [] [2020-11-30 00:31:42,974 INFO L297 tatePredicateManager]: 13 out of 13 supporting invariants were superfluous and have been removed [2020-11-30 00:31:42,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 00:31:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:31:43,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:31:43,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:43,149 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-30 00:31:43,149 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 704 states and 941 transitions. cyclomatic complexity: 290 Second operand 6 states. [2020-11-30 00:31:43,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 704 states and 941 transitions. cyclomatic complexity: 290. Second operand 6 states. Result 1278 states and 1682 transitions. Complement of second has 14 states. [2020-11-30 00:31:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:31:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:31:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2020-11-30 00:31:43,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 23 letters. Loop has 8 letters. [2020-11-30 00:31:43,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:43,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 31 letters. Loop has 8 letters. [2020-11-30 00:31:43,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:43,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 23 letters. Loop has 16 letters. [2020-11-30 00:31:43,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:43,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1278 states and 1682 transitions. [2020-11-30 00:31:43,294 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 268 [2020-11-30 00:31:43,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1278 states to 1231 states and 1618 transitions. [2020-11-30 00:31:43,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 536 [2020-11-30 00:31:43,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 557 [2020-11-30 00:31:43,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1231 states and 1618 transitions. [2020-11-30 00:31:43,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:43,321 INFO L691 BuchiCegarLoop]: Abstraction has 1231 states and 1618 transitions. [2020-11-30 00:31:43,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states and 1618 transitions. [2020-11-30 00:31:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1190. [2020-11-30 00:31:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-11-30 00:31:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1573 transitions. [2020-11-30 00:31:43,378 INFO L714 BuchiCegarLoop]: Abstraction has 1190 states and 1573 transitions. [2020-11-30 00:31:43,378 INFO L594 BuchiCegarLoop]: Abstraction has 1190 states and 1573 transitions. [2020-11-30 00:31:43,378 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-30 00:31:43,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1190 states and 1573 transitions. [2020-11-30 00:31:43,389 INFO L131 ngComponentsAnalysis]: Automaton has 38 accepting balls. 264 [2020-11-30 00:31:43,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:43,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:43,391 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:43,391 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:31:43,392 INFO L794 eck$LassoCheckResult]: Stem: 6490#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6460#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 6461#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 6422#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 6423#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 6424#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 6425#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 6426#L40-3 assume !(main_~i~1 < main_~n~0); 6404#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 6473#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 6804#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 6792#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 6793#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 6805#L24 assume ~n < 2; 6803#L8 assume true; 6791#merge_sortEXIT >#86#return; 6783#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 6788#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 6821#L24 assume ~n < 2; 6820#L8 assume true; 6782#merge_sortEXIT >#88#return; 6784#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 6947#L11-3 assume !(merge_~k~0 < merge_~n); 6777#L11-4 merge_~i~0 := 0; 6403#L17-3 [2020-11-30 00:31:43,398 INFO L796 eck$LassoCheckResult]: Loop: 6403#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 6406#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 6403#L17-3 [2020-11-30 00:31:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:43,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1013709224, now seen corresponding path program 1 times [2020-11-30 00:31:43,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:43,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248565003] [2020-11-30 00:31:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-30 00:31:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-30 00:31:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:31:43,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248565003] [2020-11-30 00:31:43,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:31:43,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:31:43,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859309390] [2020-11-30 00:31:43,467 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:31:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2563, now seen corresponding path program 1 times [2020-11-30 00:31:43,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:43,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838622013] [2020-11-30 00:31:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:43,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:43,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:43,473 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:43,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:31:43,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:31:43,573 INFO L87 Difference]: Start difference. First operand 1190 states and 1573 transitions. cyclomatic complexity: 474 Second operand 5 states. [2020-11-30 00:31:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:43,701 INFO L93 Difference]: Finished difference Result 1292 states and 1596 transitions. [2020-11-30 00:31:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:31:43,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1292 states and 1596 transitions. [2020-11-30 00:31:43,723 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 246 [2020-11-30 00:31:43,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1292 states to 1292 states and 1596 transitions. [2020-11-30 00:31:43,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 514 [2020-11-30 00:31:43,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 514 [2020-11-30 00:31:43,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1292 states and 1596 transitions. [2020-11-30 00:31:43,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:43,749 INFO L691 BuchiCegarLoop]: Abstraction has 1292 states and 1596 transitions. [2020-11-30 00:31:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states and 1596 transitions. [2020-11-30 00:31:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 954. [2020-11-30 00:31:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-11-30 00:31:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1210 transitions. [2020-11-30 00:31:43,781 INFO L714 BuchiCegarLoop]: Abstraction has 954 states and 1210 transitions. [2020-11-30 00:31:43,781 INFO L594 BuchiCegarLoop]: Abstraction has 954 states and 1210 transitions. [2020-11-30 00:31:43,781 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-11-30 00:31:43,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 954 states and 1210 transitions. [2020-11-30 00:31:43,787 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 244 [2020-11-30 00:31:43,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:43,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:43,791 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:43,791 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:31:43,793 INFO L794 eck$LassoCheckResult]: Stem: 8985#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8947#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 8948#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 8915#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 8916#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 8917#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 8918#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 8919#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 9008#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 9007#L40-3 assume !(main_~i~1 < main_~n~0); 8907#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 9028#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 9023#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 9003#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 9032#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 9027#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 9002#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 9004#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 9026#L24 assume ~n < 2; 9209#L8 assume true; 9208#merge_sortEXIT >#86#return; 8927#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 9207#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 9205#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 9193#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 9197#merge_sortENTRY [2020-11-30 00:31:43,793 INFO L796 eck$LassoCheckResult]: Loop: 9197#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 9199#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 9191#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 9197#merge_sortENTRY [2020-11-30 00:31:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash 384755823, now seen corresponding path program 3 times [2020-11-30 00:31:43,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:43,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000261928] [2020-11-30 00:31:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-30 00:31:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:31:43,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000261928] [2020-11-30 00:31:43,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545735271] [2020-11-30 00:31:43,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:44,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:31:44,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:31:44,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:31:44,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:44,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:31:44,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:44,083 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:31:44,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:31:44,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-11-30 00:31:44,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373199561] [2020-11-30 00:31:44,149 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:31:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash 30000, now seen corresponding path program 4 times [2020-11-30 00:31:44,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:44,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321119321] [2020-11-30 00:31:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:44,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:44,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:44,156 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:44,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:44,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 00:31:44,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:31:44,386 INFO L87 Difference]: Start difference. First operand 954 states and 1210 transitions. cyclomatic complexity: 327 Second operand 14 states. [2020-11-30 00:31:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:44,693 INFO L93 Difference]: Finished difference Result 1078 states and 1373 transitions. [2020-11-30 00:31:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:31:44,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1078 states and 1373 transitions. [2020-11-30 00:31:44,704 INFO L131 ngComponentsAnalysis]: Automaton has 35 accepting balls. 284 [2020-11-30 00:31:44,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1078 states to 1074 states and 1369 transitions. [2020-11-30 00:31:44,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 468 [2020-11-30 00:31:44,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 471 [2020-11-30 00:31:44,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1074 states and 1369 transitions. [2020-11-30 00:31:44,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:44,717 INFO L691 BuchiCegarLoop]: Abstraction has 1074 states and 1369 transitions. [2020-11-30 00:31:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states and 1369 transitions. [2020-11-30 00:31:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 988. [2020-11-30 00:31:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-11-30 00:31:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1256 transitions. [2020-11-30 00:31:44,751 INFO L714 BuchiCegarLoop]: Abstraction has 988 states and 1256 transitions. [2020-11-30 00:31:44,751 INFO L594 BuchiCegarLoop]: Abstraction has 988 states and 1256 transitions. [2020-11-30 00:31:44,751 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-11-30 00:31:44,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 988 states and 1256 transitions. [2020-11-30 00:31:44,758 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 264 [2020-11-30 00:31:44,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:44,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:44,759 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:44,759 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:31:44,759 INFO L794 eck$LassoCheckResult]: Stem: 11124#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 11092#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 11093#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 11065#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 11066#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 11067#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 11068#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 11069#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 11166#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 11140#L40-3 assume !(main_~i~1 < main_~n~0); 11050#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 11180#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 11177#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 11171#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 11173#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 11178#L24 assume ~n < 2; 11175#L8 assume true; 11170#merge_sortEXIT >#86#return; 11077#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 11169#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 11159#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 11082#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 11232#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 11303#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 11304#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 11359#merge_sortENTRY [2020-11-30 00:31:44,759 INFO L796 eck$LassoCheckResult]: Loop: 11359#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 11362#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 11352#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 11359#merge_sortENTRY [2020-11-30 00:31:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:44,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1495319133, now seen corresponding path program 4 times [2020-11-30 00:31:44,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:44,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608339485] [2020-11-30 00:31:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-30 00:31:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:45,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608339485] [2020-11-30 00:31:45,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296241045] [2020-11-30 00:31:45,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:45,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:31:45,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:31:45,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 00:31:45,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:45,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:31:45,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:45,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:45,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:31:45,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2020-11-30 00:31:45,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561951746] [2020-11-30 00:31:45,433 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:31:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash 30000, now seen corresponding path program 5 times [2020-11-30 00:31:45,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:45,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776764231] [2020-11-30 00:31:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:45,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:45,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:45,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:45,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:45,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 00:31:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:31:45,615 INFO L87 Difference]: Start difference. First operand 988 states and 1256 transitions. cyclomatic complexity: 340 Second operand 18 states. [2020-11-30 00:31:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:46,366 INFO L93 Difference]: Finished difference Result 1166 states and 1473 transitions. [2020-11-30 00:31:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 00:31:46,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1166 states and 1473 transitions. [2020-11-30 00:31:46,380 INFO L131 ngComponentsAnalysis]: Automaton has 37 accepting balls. 298 [2020-11-30 00:31:46,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1166 states to 1159 states and 1466 transitions. [2020-11-30 00:31:46,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 508 [2020-11-30 00:31:46,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 511 [2020-11-30 00:31:46,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1159 states and 1466 transitions. [2020-11-30 00:31:46,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:46,397 INFO L691 BuchiCegarLoop]: Abstraction has 1159 states and 1466 transitions. [2020-11-30 00:31:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states and 1466 transitions. [2020-11-30 00:31:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1076. [2020-11-30 00:31:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-11-30 00:31:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1356 transitions. [2020-11-30 00:31:46,435 INFO L714 BuchiCegarLoop]: Abstraction has 1076 states and 1356 transitions. [2020-11-30 00:31:46,435 INFO L594 BuchiCegarLoop]: Abstraction has 1076 states and 1356 transitions. [2020-11-30 00:31:46,436 INFO L427 BuchiCegarLoop]: ======== Iteration 14============ [2020-11-30 00:31:46,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1076 states and 1356 transitions. [2020-11-30 00:31:46,447 INFO L131 ngComponentsAnalysis]: Automaton has 34 accepting balls. 280 [2020-11-30 00:31:46,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:46,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:46,451 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:46,451 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:31:46,451 INFO L794 eck$LassoCheckResult]: Stem: 13404#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 13373#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 13374#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 13341#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 13342#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 13343#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 13344#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 13345#L40-3 assume !(main_~i~1 < main_~n~0); 13333#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 13387#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 13687#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 13688#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 13700#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 13701#L24 assume ~n < 2; 13696#L8 assume true; 13697#merge_sortEXIT >#86#return; 13680#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 13681#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 13695#L24 assume ~n < 2; 13689#L8 assume true; 13690#merge_sortEXIT >#88#return; 13677#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 13675#L11-3 assume !!(merge_~k~0 < merge_~n); 13673#L12 assume !(merge_~j~0 == merge_~n); 13648#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 13671#L14 assume !(merge_#t~mem7 < merge_#t~mem8);merge_#t~post11 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post11;call merge_#t~mem12 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post11, 4);merge_#t~ite13 := merge_#t~mem12; 13670#L14-2 merge_#t~ite14 := merge_#t~ite13; 13369#L13-2 [2020-11-30 00:31:46,451 INFO L796 eck$LassoCheckResult]: Loop: 13369#L13-2 merge_#t~ite15 := merge_#t~ite14; 13370#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 13636#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 13637#L11-3 assume !!(merge_~k~0 < merge_~n); 13390#L12 assume !(merge_~j~0 == merge_~n); 13391#L13 assume merge_~i~0 == merge_~m;merge_#t~post5 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post5;call merge_#t~mem6 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post5, 4);merge_#t~ite14 := merge_#t~mem6; 13369#L13-2 [2020-11-30 00:31:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1497650635, now seen corresponding path program 1 times [2020-11-30 00:31:46,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:46,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670057446] [2020-11-30 00:31:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:46,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1895288687, now seen corresponding path program 2 times [2020-11-30 00:31:46,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:46,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559656038] [2020-11-30 00:31:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -158128711, now seen corresponding path program 1 times [2020-11-30 00:31:46,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:46,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063305048] [2020-11-30 00:31:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,582 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:47,686 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 161 [2020-11-30 00:31:47,978 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-11-30 00:31:48,219 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-11-30 00:31:48,536 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-30 00:31:48,684 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-30 00:31:49,239 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 149 [2020-11-30 00:31:49,612 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-11-30 00:31:49,618 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:49,619 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:49,619 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:49,619 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:49,619 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:49,619 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:49,619 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:49,619 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:49,619 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration14_Lasso [2020-11-30 00:31:49,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:49,619 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:49,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:49,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:49,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:49,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:49,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,237 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-11-30 00:31:50,418 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-11-30 00:31:50,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:50,817 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-11-30 00:31:51,253 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-30 00:31:51,427 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-30 00:31:51,715 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-11-30 00:31:51,869 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:51,869 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 94 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 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:51,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:51,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:51,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:51,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:51,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:51,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:51,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:51,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:51,885 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 95 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 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:51,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:51,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:51,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:51,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:51,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:51,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:51,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:51,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:51,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 96 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 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:51,943 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:51,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:51,945 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:51,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:51,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:51,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:51,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:51,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:51,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 97 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 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:51,973 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 [2020-11-30 00:31:51,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:51,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:51,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:51,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:51,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:51,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:31:51,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:51,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 98 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 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:52,002 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:52,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:52,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:52,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:52,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:52,006 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:52,006 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:52,009 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 99 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 99 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:52,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:52,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:52,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:52,039 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:31:52,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:52,097 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-30 00:31:52,097 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-30 00:31:52,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:52,439 INFO L443 ModelExtractionUtils]: Simplification made 26 calls to the SMT solver. [2020-11-30 00:31:52,439 INFO L444 ModelExtractionUtils]: 59 out of 126 variables were initially zero. Simplification set additionally 64 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:52,442 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:52,446 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2020-11-30 00:31:52,446 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:52,447 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_merge_~k~0, merge_sort_merge_~n) = -1*merge_sort_merge_~k~0 + 1*merge_sort_merge_~n Supporting invariants [] [2020-11-30 00:31:52,515 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-30 00:31:52,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:31:52,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:52,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:52,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:52,681 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-30 00:31:52,681 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1076 states and 1356 transitions. cyclomatic complexity: 358 Second operand 6 states. [2020-11-30 00:31:52,815 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1076 states and 1356 transitions. cyclomatic complexity: 358. Second operand 6 states. Result 1908 states and 2417 transitions. Complement of second has 14 states. [2020-11-30 00:31:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:31:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:31:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2020-11-30 00:31:52,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 27 letters. Loop has 6 letters. [2020-11-30 00:31:52,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:52,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 33 letters. Loop has 6 letters. [2020-11-30 00:31:52,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:52,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 41 transitions. Stem has 27 letters. Loop has 12 letters. [2020-11-30 00:31:52,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:52,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1908 states and 2417 transitions. [2020-11-30 00:31:52,835 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 182 [2020-11-30 00:31:52,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1908 states to 1531 states and 1950 transitions. [2020-11-30 00:31:52,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 518 [2020-11-30 00:31:52,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 630 [2020-11-30 00:31:52,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1531 states and 1950 transitions. [2020-11-30 00:31:52,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:52,852 INFO L691 BuchiCegarLoop]: Abstraction has 1531 states and 1950 transitions. [2020-11-30 00:31:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states and 1950 transitions. [2020-11-30 00:31:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1180. [2020-11-30 00:31:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-11-30 00:31:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1577 transitions. [2020-11-30 00:31:52,886 INFO L714 BuchiCegarLoop]: Abstraction has 1180 states and 1577 transitions. [2020-11-30 00:31:52,886 INFO L594 BuchiCegarLoop]: Abstraction has 1180 states and 1577 transitions. [2020-11-30 00:31:52,887 INFO L427 BuchiCegarLoop]: ======== Iteration 15============ [2020-11-30 00:31:52,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1180 states and 1577 transitions. [2020-11-30 00:31:52,894 INFO L131 ngComponentsAnalysis]: Automaton has 22 accepting balls. 176 [2020-11-30 00:31:52,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:52,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:52,895 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:52,895 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:31:52,895 INFO L794 eck$LassoCheckResult]: Stem: 16561#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 16534#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 16535#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 16503#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 16504#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 16505#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 16506#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 16507#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 16577#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 16604#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 16603#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 16602#L40-3 assume !(main_~i~1 < main_~n~0); 16496#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 16601#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 16595#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 16574#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 16608#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 16610#L24 assume ~n < 2; 16609#L8 assume true; 16607#merge_sortEXIT >#86#return; 16516#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 16569#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 16570#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 16498#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 16655#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 16854#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 16856#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 16902#merge_sortENTRY [2020-11-30 00:31:52,896 INFO L796 eck$LassoCheckResult]: Loop: 16902#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 16907#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 16890#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 16902#merge_sortENTRY [2020-11-30 00:31:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:52,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1038514783, now seen corresponding path program 5 times [2020-11-30 00:31:52,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:52,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127670843] [2020-11-30 00:31:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:53,151 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-11-30 00:31:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-30 00:31:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127670843] [2020-11-30 00:31:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406415077] [2020-11-30 00:31:53,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:53,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-11-30 00:31:53,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:31:53,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:31:53,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:53,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:31:53,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:53,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 00:31:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:31:53,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:31:53,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2020-11-30 00:31:53,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018253877] [2020-11-30 00:31:53,658 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:31:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 30000, now seen corresponding path program 6 times [2020-11-30 00:31:53,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:53,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57666366] [2020-11-30 00:31:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:53,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:53,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:53,665 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:53,819 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-11-30 00:31:53,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-30 00:31:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2020-11-30 00:31:53,878 INFO L87 Difference]: Start difference. First operand 1180 states and 1577 transitions. cyclomatic complexity: 471 Second operand 26 states. [2020-11-30 00:31:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:55,866 INFO L93 Difference]: Finished difference Result 1020 states and 1357 transitions. [2020-11-30 00:31:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-30 00:31:55,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1020 states and 1357 transitions. [2020-11-30 00:31:55,879 INFO L131 ngComponentsAnalysis]: Automaton has 39 accepting balls. 356 [2020-11-30 00:31:55,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1020 states to 1009 states and 1345 transitions. [2020-11-30 00:31:55,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 644 [2020-11-30 00:31:55,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 650 [2020-11-30 00:31:55,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1009 states and 1345 transitions. [2020-11-30 00:31:55,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:55,893 INFO L691 BuchiCegarLoop]: Abstraction has 1009 states and 1345 transitions. [2020-11-30 00:31:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states and 1345 transitions. [2020-11-30 00:31:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 772. [2020-11-30 00:31:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-11-30 00:31:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1021 transitions. [2020-11-30 00:31:55,925 INFO L714 BuchiCegarLoop]: Abstraction has 772 states and 1021 transitions. [2020-11-30 00:31:55,925 INFO L594 BuchiCegarLoop]: Abstraction has 772 states and 1021 transitions. [2020-11-30 00:31:55,925 INFO L427 BuchiCegarLoop]: ======== Iteration 16============ [2020-11-30 00:31:55,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 772 states and 1021 transitions. [2020-11-30 00:31:55,932 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 176 [2020-11-30 00:31:55,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:55,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:55,933 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:55,933 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:31:55,933 INFO L794 eck$LassoCheckResult]: Stem: 18941#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 18916#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 18917#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 18885#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 18886#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 18887#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 18888#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 18889#L40-3 assume !(main_~i~1 < main_~n~0); 18882#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 18922#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 18965#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 18966#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 19076#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 19069#L24 assume ~n < 2; 18973#L8 assume true; 18974#merge_sortEXIT >#86#return; 18947#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 18946#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 18948#L24 assume ~n < 2; 19412#L8 assume true; 19410#merge_sortEXIT >#88#return; 19408#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 19405#L11-3 assume !!(merge_~k~0 < merge_~n); 19403#L12 assume !(merge_~j~0 == merge_~n); 19402#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 19391#L14 assume !(merge_#t~mem7 < merge_#t~mem8);merge_#t~post11 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post11;call merge_#t~mem12 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post11, 4);merge_#t~ite13 := merge_#t~mem12; 19392#L14-2 merge_#t~ite14 := merge_#t~ite13; 19418#L13-2 merge_#t~ite15 := merge_#t~ite14; 19366#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 19578#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 19223#L11-3 assume !(merge_~k~0 < merge_~n); 18942#L11-4 merge_~i~0 := 0; 18879#L17-3 [2020-11-30 00:31:55,934 INFO L796 eck$LassoCheckResult]: Loop: 18879#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 18881#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 18879#L17-3 [2020-11-30 00:31:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:55,934 INFO L82 PathProgramCache]: Analyzing trace with hash 964730358, now seen corresponding path program 1 times [2020-11-30 00:31:55,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:55,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59754829] [2020-11-30 00:31:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-30 00:31:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:56,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-30 00:31:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:31:56,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59754829] [2020-11-30 00:31:56,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855873381] [2020-11-30 00:31:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:56,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:31:56,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 00:31:56,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:31:56,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-11-30 00:31:56,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237785603] [2020-11-30 00:31:56,143 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:31:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:56,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2563, now seen corresponding path program 2 times [2020-11-30 00:31:56,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:56,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658560461] [2020-11-30 00:31:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:56,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:56,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:31:56,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:31:56,215 INFO L87 Difference]: Start difference. First operand 772 states and 1021 transitions. cyclomatic complexity: 296 Second operand 8 states. [2020-11-30 00:31:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:56,350 INFO L93 Difference]: Finished difference Result 1430 states and 1785 transitions. [2020-11-30 00:31:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:31:56,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1430 states and 1785 transitions. [2020-11-30 00:31:56,363 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 176 [2020-11-30 00:31:56,375 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1430 states to 1406 states and 1755 transitions. [2020-11-30 00:31:56,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 676 [2020-11-30 00:31:56,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 676 [2020-11-30 00:31:56,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1406 states and 1755 transitions. [2020-11-30 00:31:56,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:56,377 INFO L691 BuchiCegarLoop]: Abstraction has 1406 states and 1755 transitions. [2020-11-30 00:31:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states and 1755 transitions. [2020-11-30 00:31:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 814. [2020-11-30 00:31:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-11-30 00:31:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1052 transitions. [2020-11-30 00:31:56,404 INFO L714 BuchiCegarLoop]: Abstraction has 814 states and 1052 transitions. [2020-11-30 00:31:56,404 INFO L594 BuchiCegarLoop]: Abstraction has 814 states and 1052 transitions. [2020-11-30 00:31:56,404 INFO L427 BuchiCegarLoop]: ======== Iteration 17============ [2020-11-30 00:31:56,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 814 states and 1052 transitions. [2020-11-30 00:31:56,411 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 176 [2020-11-30 00:31:56,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:56,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:56,413 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:56,413 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:31:56,413 INFO L794 eck$LassoCheckResult]: Stem: 21261#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 21236#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 21237#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 21207#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 21208#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 21209#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 21210#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 21211#L40-3 assume !(main_~i~1 < main_~n~0); 21205#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 21241#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 21284#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 21271#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 21272#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 21544#L24 assume ~n < 2; 21543#L8 assume true; 21542#merge_sortEXIT >#86#return; 21267#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 21266#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 21268#L24 assume ~n < 2; 21600#L8 assume true; 21598#merge_sortEXIT >#88#return; 21597#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 21595#L11-3 assume !!(merge_~k~0 < merge_~n); 21596#L12 assume !(merge_~j~0 == merge_~n); 21611#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 21773#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 21765#L14-2 merge_#t~ite14 := merge_#t~ite13; 21763#L13-2 merge_#t~ite15 := merge_#t~ite14; 21761#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 21569#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 21567#L11-3 assume !!(merge_~k~0 < merge_~n); 21294#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 21295#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 21552#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 21287#L11-3 assume !(merge_~k~0 < merge_~n); 21262#L11-4 merge_~i~0 := 0; 21201#L17-3 [2020-11-30 00:31:56,414 INFO L796 eck$LassoCheckResult]: Loop: 21201#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 21206#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 21201#L17-3 [2020-11-30 00:31:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:56,414 INFO L82 PathProgramCache]: Analyzing trace with hash 64206937, now seen corresponding path program 1 times [2020-11-30 00:31:56,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:56,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880195495] [2020-11-30 00:31:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2563, now seen corresponding path program 3 times [2020-11-30 00:31:56,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:56,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779346823] [2020-11-30 00:31:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,496 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1573325915, now seen corresponding path program 1 times [2020-11-30 00:31:56,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:56,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148274657] [2020-11-30 00:31:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:56,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:56,548 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:57,755 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 234 DAG size of output: 193 [2020-11-30 00:31:57,935 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-30 00:31:58,121 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-11-30 00:31:58,320 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-30 00:31:58,446 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-30 00:31:59,095 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-11-30 00:31:59,355 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-30 00:31:59,358 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:59,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:59,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:59,359 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:59,359 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:59,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:59,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:59,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:59,359 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration17_Lasso [2020-11-30 00:31:59,359 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:59,359 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:59,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:59,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,115 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 124 [2020-11-30 00:32:00,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:00,541 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-11-30 00:32:01,058 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-11-30 00:32:01,132 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:32:01,132 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 103 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 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,139 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,142 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 104 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 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,166 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,168 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,169 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 105 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 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,190 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,192 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 106 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 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 107 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 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,238 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 108 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 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,265 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,265 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 109 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 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,289 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,291 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 110 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 110 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,313 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,315 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 111 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 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,343 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 112 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 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,370 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 113 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 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,394 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 114 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 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,416 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,419 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 115 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 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,442 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 116 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 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,468 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 117 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 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,494 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,494 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,496 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 118 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 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,520 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,522 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,523 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:32:01,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 120 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 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,599 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 121 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 121 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:01,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:01,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:01,632 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 122 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 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,658 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,661 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,661 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,665 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 123 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 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,694 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,695 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 124 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 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,729 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,729 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,733 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 125 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 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,757 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 [2020-11-30 00:32:01,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,764 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,765 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 126 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 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:01,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:01,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:01,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:01,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:01,813 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:01,813 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:01,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:32:01,899 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2020-11-30 00:32:01,899 INFO L444 ModelExtractionUtils]: 34 out of 67 variables were initially zero. Simplification set additionally 28 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 127 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 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:01,903 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:32:01,905 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-30 00:32:01,905 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:32:01,905 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_merge_~i~0) = -2*merge_sort_merge_~i~0 + 3 Supporting invariants [-1*merge_sort_merge_~n + 2 >= 0] [2020-11-30 00:32:01,983 INFO L297 tatePredicateManager]: 14 out of 15 supporting invariants were superfluous and have been removed [2020-11-30 00:32:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:02,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 00:32:02,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:02,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:32:02,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:32:02,300 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.9 stem predicates 2 loop predicates [2020-11-30 00:32:02,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 814 states and 1052 transitions. cyclomatic complexity: 285 Second operand 11 states. [2020-11-30 00:32:02,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 814 states and 1052 transitions. cyclomatic complexity: 285. Second operand 11 states. Result 904 states and 1169 transitions. Complement of second has 19 states. [2020-11-30 00:32:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2020-11-30 00:32:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 00:32:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 59 transitions. [2020-11-30 00:32:02,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 59 transitions. Stem has 36 letters. Loop has 2 letters. [2020-11-30 00:32:02,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:32:02,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 59 transitions. Stem has 38 letters. Loop has 2 letters. [2020-11-30 00:32:02,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:32:02,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 59 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-30 00:32:02,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:32:02,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 904 states and 1169 transitions. [2020-11-30 00:32:02,922 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 176 [2020-11-30 00:32:02,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 904 states to 820 states and 1062 transitions. [2020-11-30 00:32:02,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 487 [2020-11-30 00:32:02,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 498 [2020-11-30 00:32:02,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 820 states and 1062 transitions. [2020-11-30 00:32:02,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:32:02,931 INFO L691 BuchiCegarLoop]: Abstraction has 820 states and 1062 transitions. [2020-11-30 00:32:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states and 1062 transitions. [2020-11-30 00:32:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 801. [2020-11-30 00:32:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-11-30 00:32:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1038 transitions. [2020-11-30 00:32:02,951 INFO L714 BuchiCegarLoop]: Abstraction has 801 states and 1038 transitions. [2020-11-30 00:32:02,951 INFO L594 BuchiCegarLoop]: Abstraction has 801 states and 1038 transitions. [2020-11-30 00:32:02,952 INFO L427 BuchiCegarLoop]: ======== Iteration 18============ [2020-11-30 00:32:02,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 801 states and 1038 transitions. [2020-11-30 00:32:02,955 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 176 [2020-11-30 00:32:02,956 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:32:02,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:32:02,957 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:02,957 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:32:02,957 INFO L794 eck$LassoCheckResult]: Stem: 23210#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 23185#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 23186#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 23164#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 23165#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 23166#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 23167#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 23168#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 23227#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 23226#L40-3 assume !(main_~i~1 < main_~n~0); 23160#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 23244#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 23243#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 23218#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 23219#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 23338#L24 assume ~n < 2; 23337#L8 assume true; 23336#merge_sortEXIT >#86#return; 23170#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 23335#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 23169#L24 assume ~n < 2; 23171#L8 assume true; 23187#merge_sortEXIT >#88#return; 23188#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 23189#L11-3 assume !!(merge_~k~0 < merge_~n); 23212#L12 assume !(merge_~j~0 == merge_~n); 23198#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 23934#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 23932#L14-2 merge_#t~ite14 := merge_#t~ite13; 23933#L13-2 merge_#t~ite15 := merge_#t~ite14; 23944#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 23943#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 23942#L11-3 assume !!(merge_~k~0 < merge_~n); 23941#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 23900#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 23928#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 23716#L11-3 assume !(merge_~k~0 < merge_~n); 23715#L11-4 merge_~i~0 := 0; 23159#L17-3 [2020-11-30 00:32:02,957 INFO L796 eck$LassoCheckResult]: Loop: 23159#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 23161#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 23159#L17-3 [2020-11-30 00:32:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:02,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1607578857, now seen corresponding path program 2 times [2020-11-30 00:32:02,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:02,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703444717] [2020-11-30 00:32:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:03,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-30 00:32:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:32:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:32:03,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703444717] [2020-11-30 00:32:03,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178004742] [2020-11-30 00:32:03,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:32:03,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:32:03,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:32:03,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:32:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:32:03,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:32:03,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2020-11-30 00:32:03,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501157704] [2020-11-30 00:32:03,409 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:32:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2563, now seen corresponding path program 4 times [2020-11-30 00:32:03,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:03,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514644152] [2020-11-30 00:32:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:03,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:03,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:03,416 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:03,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:32:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 00:32:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:32:03,493 INFO L87 Difference]: Start difference. First operand 801 states and 1038 transitions. cyclomatic complexity: 284 Second operand 17 states. [2020-11-30 00:32:04,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:32:04,045 INFO L93 Difference]: Finished difference Result 773 states and 995 transitions. [2020-11-30 00:32:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:32:04,046 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 773 states and 995 transitions. [2020-11-30 00:32:04,052 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 198 [2020-11-30 00:32:04,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 773 states to 769 states and 991 transitions. [2020-11-30 00:32:04,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 498 [2020-11-30 00:32:04,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 498 [2020-11-30 00:32:04,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 769 states and 991 transitions. [2020-11-30 00:32:04,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:32:04,061 INFO L691 BuchiCegarLoop]: Abstraction has 769 states and 991 transitions. [2020-11-30 00:32:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states and 991 transitions. [2020-11-30 00:32:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-11-30 00:32:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-11-30 00:32:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 945 transitions. [2020-11-30 00:32:04,081 INFO L714 BuchiCegarLoop]: Abstraction has 731 states and 945 transitions. [2020-11-30 00:32:04,081 INFO L594 BuchiCegarLoop]: Abstraction has 731 states and 945 transitions. [2020-11-30 00:32:04,081 INFO L427 BuchiCegarLoop]: ======== Iteration 19============ [2020-11-30 00:32:04,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 731 states and 945 transitions. [2020-11-30 00:32:04,085 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 176 [2020-11-30 00:32:04,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:32:04,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:32:04,089 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:04,089 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:32:04,089 INFO L794 eck$LassoCheckResult]: Stem: 24944#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 24917#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 24918#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 24895#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 24896#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 24897#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 24898#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 24899#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 24960#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 24959#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 24958#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 24957#L40-3 assume !(main_~i~1 < main_~n~0); 24893#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 24924#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 24979#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 24976#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 24977#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 25048#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 25042#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 25043#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 25049#L24 assume ~n < 2; 25047#L8 assume true; 25041#merge_sortEXIT >#86#return; 25035#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 25038#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 25045#L24 assume ~n < 2; 25039#L8 assume true; 25034#merge_sortEXIT >#88#return; 25033#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 25031#L11-3 assume !!(merge_~k~0 < merge_~n); 25032#L12 assume !(merge_~j~0 == merge_~n); 25083#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 25245#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 25237#L14-2 merge_#t~ite14 := merge_#t~ite13; 25238#L13-2 merge_#t~ite15 := merge_#t~ite14; 25216#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 25217#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 25210#L11-3 assume !!(merge_~k~0 < merge_~n); 25211#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 24994#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 24993#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 24992#L11-3 assume !(merge_~k~0 < merge_~n); 24991#L11-4 merge_~i~0 := 0; 24989#L17-3 [2020-11-30 00:32:04,090 INFO L796 eck$LassoCheckResult]: Loop: 24989#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 24990#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 24989#L17-3 [2020-11-30 00:32:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:04,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1148372884, now seen corresponding path program 3 times [2020-11-30 00:32:04,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:04,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539098458] [2020-11-30 00:32:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:04,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:04,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:04,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2563, now seen corresponding path program 5 times [2020-11-30 00:32:04,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:04,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002871823] [2020-11-30 00:32:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:04,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:04,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:04,223 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:04,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:04,224 INFO L82 PathProgramCache]: Analyzing trace with hash -220251946, now seen corresponding path program 2 times [2020-11-30 00:32:04,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:04,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528919780] [2020-11-30 00:32:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:04,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:04,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:04,292 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:05,600 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 234 DAG size of output: 190 [2020-11-30 00:32:05,745 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-30 00:32:05,956 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-30 00:32:06,061 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-30 00:32:06,463 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-11-30 00:32:06,609 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-30 00:32:07,091 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2020-11-30 00:32:07,343 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-11-30 00:32:07,499 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-30 00:32:08,646 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 168 DAG size of output: 159 [2020-11-30 00:32:09,521 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2020-11-30 00:32:09,530 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:32:09,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:32:09,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:32:09,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:32:09,530 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:32:09,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:09,531 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:32:09,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:32:09,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration19_Lasso [2020-11-30 00:32:09,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:32:09,531 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:32:09,531 WARN L313 ript$VariableManager]: TermVariabe aux_mod_v_ULTIMATE.start_main_~n~0_53_37 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:32:09,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:09,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,416 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 132 [2020-11-30 00:32:10,581 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-11-30 00:32:10,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:10,956 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-11-30 00:32:11,422 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-30 00:32:11,733 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-11-30 00:32:11,871 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:32:11,871 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 129 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 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:11,874 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:11,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:11,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:11,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:11,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:11,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:11,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:11,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:11,878 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 130 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 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:11,915 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:11,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:11,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:11,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:11,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:11,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:11,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:11,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:11,919 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 131 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 131 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:11,945 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:11,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:11,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:11,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:11,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:11,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:11,947 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:11,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:11,948 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 132 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 132 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:11,975 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:11,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:11,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:11,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:11,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:11,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:11,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:11,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:11,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 133 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 133 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,011 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 134 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 134 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,037 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,040 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 135 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 135 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,070 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 136 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 136 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,096 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 137 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 137 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,131 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 138 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 138 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,159 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,160 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 139 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 139 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,190 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 140 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 140 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,220 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 141 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 141 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,248 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 [2020-11-30 00:32:12,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 142 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 142 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,278 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,281 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 143 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 143 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,307 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,312 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 144 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 144 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,340 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 [2020-11-30 00:32:12,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,343 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 145 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 145 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,376 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,378 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 146 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 146 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,406 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,408 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:12,409 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:12,411 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 147 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 147 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,438 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,442 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 148 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 148 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,467 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,480 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 149 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 149 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,508 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,511 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 150 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 150 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,537 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,541 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 151 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 151 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,569 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,569 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,570 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 152 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 152 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,597 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,598 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:32:12,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,599 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:32:12,599 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:32:12,600 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 153 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 153 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:12,631 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:12,636 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 154 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 154 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:32:12,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:32:12,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:32:12,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:32:12,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:32:12,681 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:32:12,682 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:32:12,707 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:32:12,749 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-11-30 00:32:12,749 INFO L444 ModelExtractionUtils]: 50 out of 70 variables were initially zero. Simplification set additionally 17 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 155 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 155 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:12,751 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:32:12,754 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 00:32:12,754 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:32:12,754 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(merge_sort_merge_~i~0, merge_sort_merge_~n) = -1*merge_sort_merge_~i~0 + 1*merge_sort_merge_~n Supporting invariants [] [2020-11-30 00:32:12,839 INFO L297 tatePredicateManager]: 17 out of 17 supporting invariants were superfluous and have been removed [2020-11-30 00:32:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:12,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:32:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:32:13,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:32:13,024 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-30 00:32:13,024 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 731 states and 945 transitions. cyclomatic complexity: 257 Second operand 4 states. [2020-11-30 00:32:13,123 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 731 states and 945 transitions. cyclomatic complexity: 257. Second operand 4 states. Result 762 states and 992 transitions. Complement of second has 9 states. [2020-11-30 00:32:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:32:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:32:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2020-11-30 00:32:13,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 43 letters. Loop has 2 letters. [2020-11-30 00:32:13,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:32:13,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 45 letters. Loop has 2 letters. [2020-11-30 00:32:13,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:32:13,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 43 letters. Loop has 4 letters. [2020-11-30 00:32:13,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:32:13,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 762 states and 992 transitions. [2020-11-30 00:32:13,131 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 168 [2020-11-30 00:32:13,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 762 states to 742 states and 962 transitions. [2020-11-30 00:32:13,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 456 [2020-11-30 00:32:13,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 461 [2020-11-30 00:32:13,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 742 states and 962 transitions. [2020-11-30 00:32:13,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:32:13,139 INFO L691 BuchiCegarLoop]: Abstraction has 742 states and 962 transitions. [2020-11-30 00:32:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states and 962 transitions. [2020-11-30 00:32:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 739. [2020-11-30 00:32:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-11-30 00:32:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 959 transitions. [2020-11-30 00:32:13,158 INFO L714 BuchiCegarLoop]: Abstraction has 739 states and 959 transitions. [2020-11-30 00:32:13,158 INFO L594 BuchiCegarLoop]: Abstraction has 739 states and 959 transitions. [2020-11-30 00:32:13,158 INFO L427 BuchiCegarLoop]: ======== Iteration 20============ [2020-11-30 00:32:13,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 739 states and 959 transitions. [2020-11-30 00:32:13,161 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 168 [2020-11-30 00:32:13,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:32:13,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:32:13,163 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:13,163 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:13,163 INFO L794 eck$LassoCheckResult]: Stem: 26671#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 26645#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 26646#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 26624#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 26625#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 26626#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 26627#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 26628#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 26694#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 26693#L40-3 assume !(main_~i~1 < main_~n~0); 26616#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 26795#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 26794#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 26792#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 26793#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 26797#L24 assume ~n < 2; 26796#L8 assume true; 26791#merge_sortEXIT >#86#return; 26638#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 26788#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 26787#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 26785#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 26786#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 26790#L24 assume ~n < 2; 26789#L8 assume true; 26784#merge_sortEXIT >#86#return; 26767#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 26777#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 26799#L24 assume ~n < 2; 26766#L8 assume true; 26768#merge_sortEXIT >#88#return; 26752#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 26750#L11-3 assume !!(merge_~k~0 < merge_~n); 26751#L12 assume !(merge_~j~0 == merge_~n); 26662#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 26657#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 26658#L14-2 merge_#t~ite14 := merge_#t~ite13; 26643#L13-2 merge_#t~ite15 := merge_#t~ite14; 26644#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 26674#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 26675#L11-3 assume !!(merge_~k~0 < merge_~n); 27302#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 26701#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 26702#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 26697#L11-3 assume !(merge_~k~0 < merge_~n); 26698#L11-4 merge_~i~0 := 0; 27179#L17-3 assume !(merge_~i~0 < merge_~n); 27173#L17-4 call ULTIMATE.dealloc(merge_~x~0.base, merge_~x~0.offset); 27174#L8 assume true; 26669#merge_sortEXIT >#88#return; 26670#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 27261#L11-3 assume !!(merge_~k~0 < merge_~n); 27260#L12 assume !(merge_~j~0 == merge_~n); 27259#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 27256#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 27253#L14-2 merge_#t~ite14 := merge_#t~ite13; 27251#L13-2 merge_#t~ite15 := merge_#t~ite14; 27249#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 27247#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 27245#L11-3 assume !!(merge_~k~0 < merge_~n); 27244#L12 [2020-11-30 00:32:13,163 INFO L796 eck$LassoCheckResult]: Loop: 27244#L12 assume !(merge_~j~0 == merge_~n); 27258#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 27254#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 27255#L14-2 merge_#t~ite14 := merge_#t~ite13; 27266#L13-2 merge_#t~ite15 := merge_#t~ite14; 27234#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 27235#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 27243#L11-3 assume !!(merge_~k~0 < merge_~n); 27244#L12 [2020-11-30 00:32:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:13,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1719261906, now seen corresponding path program 1 times [2020-11-30 00:32:13,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:13,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859438758] [2020-11-30 00:32:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-30 00:32:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:32:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:32:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:32:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-30 00:32:13,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859438758] [2020-11-30 00:32:13,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995925899] [2020-11-30 00:32:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:32:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:13,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:32:13,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 00:32:13,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:32:13,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14] total 18 [2020-11-30 00:32:13,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805490007] [2020-11-30 00:32:13,613 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:32:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:13,614 INFO L82 PathProgramCache]: Analyzing trace with hash 233986997, now seen corresponding path program 2 times [2020-11-30 00:32:13,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:13,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216684187] [2020-11-30 00:32:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:13,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:13,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:13,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:13,929 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-11-30 00:32:14,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:32:14,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 00:32:14,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:32:14,001 INFO L87 Difference]: Start difference. First operand 739 states and 959 transitions. cyclomatic complexity: 264 Second operand 18 states. [2020-11-30 00:32:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:32:14,961 INFO L93 Difference]: Finished difference Result 960 states and 1212 transitions. [2020-11-30 00:32:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 00:32:14,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 960 states and 1212 transitions. [2020-11-30 00:32:14,967 INFO L131 ngComponentsAnalysis]: Automaton has 27 accepting balls. 254 [2020-11-30 00:32:14,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 960 states to 960 states and 1212 transitions. [2020-11-30 00:32:14,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 634 [2020-11-30 00:32:14,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 634 [2020-11-30 00:32:14,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 960 states and 1212 transitions. [2020-11-30 00:32:14,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:32:14,975 INFO L691 BuchiCegarLoop]: Abstraction has 960 states and 1212 transitions. [2020-11-30 00:32:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states and 1212 transitions. [2020-11-30 00:32:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 745. [2020-11-30 00:32:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-11-30 00:32:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 960 transitions. [2020-11-30 00:32:14,995 INFO L714 BuchiCegarLoop]: Abstraction has 745 states and 960 transitions. [2020-11-30 00:32:14,995 INFO L594 BuchiCegarLoop]: Abstraction has 745 states and 960 transitions. [2020-11-30 00:32:14,996 INFO L427 BuchiCegarLoop]: ======== Iteration 21============ [2020-11-30 00:32:14,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 745 states and 960 transitions. [2020-11-30 00:32:14,999 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 168 [2020-11-30 00:32:15,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:32:15,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:32:15,000 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:15,001 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:15,001 INFO L794 eck$LassoCheckResult]: Stem: 28645#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 28618#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 28619#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 28595#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 28596#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 28597#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 28598#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 28599#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 28665#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 28664#L40-3 assume !(main_~i~1 < main_~n~0); 28607#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 28685#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 28684#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 28655#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 28656#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 28836#L24 assume ~n < 2; 28835#L8 assume true; 28834#merge_sortEXIT >#86#return; 28592#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 28833#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 28832#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 28682#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 28683#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 28831#L24 assume ~n < 2; 28830#L8 assume true; 28681#merge_sortEXIT >#86#return; 28601#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 28652#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 28600#L24 assume ~n < 2; 28602#L8 assume true; 29105#merge_sortEXIT >#88#return; 29104#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 29100#L11-3 assume !!(merge_~k~0 < merge_~n); 29094#L12 assume !(merge_~j~0 == merge_~n); 28610#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 28611#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 28635#L14-2 merge_#t~ite14 := merge_#t~ite13; 28616#L13-2 merge_#t~ite15 := merge_#t~ite14; 28617#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 29182#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 28650#L11-3 assume !!(merge_~k~0 < merge_~n); 28651#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 29044#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 29039#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 29037#L11-3 assume !(merge_~k~0 < merge_~n); 29034#L11-4 merge_~i~0 := 0; 29033#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 28594#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 28591#L17-3 assume !(merge_~i~0 < merge_~n); 28593#L17-4 call ULTIMATE.dealloc(merge_~x~0.base, merge_~x~0.offset); 28620#L8 assume true; 28621#merge_sortEXIT >#88#return; 28622#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 28623#L11-3 assume !!(merge_~k~0 < merge_~n); 29320#L12 assume !(merge_~j~0 == merge_~n); 29319#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 29317#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 29318#L14-2 merge_#t~ite14 := merge_#t~ite13; 29326#L13-2 merge_#t~ite15 := merge_#t~ite14; 29325#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 29324#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 28649#L11-3 assume !!(merge_~k~0 < merge_~n); 28636#L12 [2020-11-30 00:32:15,001 INFO L796 eck$LassoCheckResult]: Loop: 28636#L12 assume !(merge_~j~0 == merge_~n); 28606#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 28608#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 28633#L14-2 merge_#t~ite14 := merge_#t~ite13; 29329#L13-2 merge_#t~ite15 := merge_#t~ite14; 29328#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 29327#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 28922#L11-3 assume !!(merge_~k~0 < merge_~n); 28636#L12 [2020-11-30 00:32:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2004988308, now seen corresponding path program 1 times [2020-11-30 00:32:15,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:15,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493625416] [2020-11-30 00:32:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:15,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-30 00:32:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:32:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:32:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:32:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-30 00:32:15,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493625416] [2020-11-30 00:32:15,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713676757] [2020-11-30 00:32:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c985f434-4707-4675-8ac8-4a0e87971bf9/bin/uautomizer/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:32:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:32:15,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 00:32:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:32:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-30 00:32:15,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:32:15,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 21 [2020-11-30 00:32:15,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023773209] [2020-11-30 00:32:15,606 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:32:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash 233986997, now seen corresponding path program 3 times [2020-11-30 00:32:15,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:15,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152654623] [2020-11-30 00:32:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:15,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:15,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:15,617 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:15,825 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 00:32:15,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:32:15,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-30 00:32:15,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:32:15,876 INFO L87 Difference]: Start difference. First operand 745 states and 960 transitions. cyclomatic complexity: 259 Second operand 21 states. [2020-11-30 00:32:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:32:18,408 INFO L93 Difference]: Finished difference Result 2711 states and 3571 transitions. [2020-11-30 00:32:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-30 00:32:18,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2711 states and 3571 transitions. [2020-11-30 00:32:18,425 INFO L131 ngComponentsAnalysis]: Automaton has 87 accepting balls. 690 [2020-11-30 00:32:18,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2711 states to 2705 states and 3565 transitions. [2020-11-30 00:32:18,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1664 [2020-11-30 00:32:18,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1664 [2020-11-30 00:32:18,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2705 states and 3565 transitions. [2020-11-30 00:32:18,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:32:18,450 INFO L691 BuchiCegarLoop]: Abstraction has 2705 states and 3565 transitions. [2020-11-30 00:32:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states and 3565 transitions. [2020-11-30 00:32:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 1111. [2020-11-30 00:32:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-11-30 00:32:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1441 transitions. [2020-11-30 00:32:18,493 INFO L714 BuchiCegarLoop]: Abstraction has 1111 states and 1441 transitions. [2020-11-30 00:32:18,493 INFO L594 BuchiCegarLoop]: Abstraction has 1111 states and 1441 transitions. [2020-11-30 00:32:18,493 INFO L427 BuchiCegarLoop]: ======== Iteration 22============ [2020-11-30 00:32:18,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1111 states and 1441 transitions. [2020-11-30 00:32:18,497 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 288 [2020-11-30 00:32:18,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:32:18,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:32:18,498 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:18,499 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:32:18,499 INFO L794 eck$LassoCheckResult]: Stem: 32448#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 32424#L-1 havoc main_#res;havoc main_#t~nondet18, main_#t~malloc19.base, main_#t~malloc19.offset, main_#t~nondet21, main_#t~post20, main_~i~1, main_~n~0, main_~a~0.base, main_~a~0.offset;main_~n~0 := main_#t~nondet18;havoc main_#t~nondet18; 32425#L35 assume !(main_~n~0 < 1);call main_#t~malloc19.base, main_#t~malloc19.offset := #Ultimate.allocOnHeap(4 * main_~n~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc19.base, main_#t~malloc19.offset;main_~i~1 := 0; 32404#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 32405#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 32406#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 32407#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 32408#L40-3 assume !!(main_~i~1 < main_~n~0);call write~int(main_#t~nondet21, main_~a~0.base, main_~a~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet21; 32471#L40-2 main_#t~post20 := main_~i~1;main_~i~1 := 1 + main_#t~post20;havoc main_#t~post20; 32470#L40-3 assume !(main_~i~1 < main_~n~0); 32396#L40-4 call merge_sort(main_~a~0.base, main_~a~0.offset, main_~n~0);< 32504#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 32503#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 32447#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 32476#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 32748#L24 assume ~n < 2; 32746#L8 assume true; 32446#merge_sortEXIT >#86#return; 32418#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 32517#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 32508#L24 assume !(~n < 2);~m~0 := (if ~n < 0 && 0 != ~n % 2 then 1 + ~n / 2 else ~n / 2); 32493#L27 call merge_sort(~a.base, ~a.offset, ~m~0);< 32538#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 32514#L24 assume ~n < 2; 32515#L8 assume true; 32492#merge_sortEXIT >#86#return; 32473#L27-1 call merge_sort(~a.base, ~a.offset + 4 * ~m~0, ~n - ~m~0);< 32472#merge_sortENTRY ~a.base, ~a.offset := #in~a.base, #in~a.offset;~n := #in~n; 32474#L24 assume ~n < 2; 33040#L8 assume true; 33035#merge_sortEXIT >#88#return; 33036#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 33073#L11-3 assume !!(merge_~k~0 < merge_~n); 33074#L12 assume !(merge_~j~0 == merge_~n); 33431#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 33438#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 33436#L14-2 merge_#t~ite14 := merge_#t~ite13; 33435#L13-2 merge_#t~ite15 := merge_#t~ite14; 33434#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 33433#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 33432#L11-3 assume !!(merge_~k~0 < merge_~n); 33430#L12 assume merge_~j~0 == merge_~n;merge_#t~post3 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post3;call merge_#t~mem4 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post3, 4);merge_#t~ite15 := merge_#t~mem4; 32942#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 32939#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 32936#L11-3 assume !(merge_~k~0 < merge_~n); 32933#L11-4 merge_~i~0 := 0; 32930#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 32929#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 32926#L17-3 assume !!(merge_~i~0 < merge_~n);call merge_#t~mem17 := read~int(merge_~x~0.base, merge_~x~0.offset + 4 * merge_~i~0, 4);call write~int(merge_#t~mem17, merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4);havoc merge_#t~mem17; 32909#L17-2 merge_#t~post16 := merge_~i~0;merge_~i~0 := 1 + merge_#t~post16;havoc merge_#t~post16; 32908#L17-3 assume !(merge_~i~0 < merge_~n); 32417#L17-4 call ULTIMATE.dealloc(merge_~x~0.base, merge_~x~0.offset); 32419#L8 assume true; 32426#merge_sortEXIT >#88#return; 32427#L28 merge_#in~a.base, merge_#in~a.offset, merge_#in~n, merge_#in~m := ~a.base, ~a.offset, ~n, ~m~0;havoc merge_#t~malloc1.base, merge_#t~malloc1.offset, merge_#t~ite15, merge_#t~post3, merge_#t~mem4, merge_#t~ite14, merge_#t~post5, merge_#t~mem6, merge_#t~mem7, merge_#t~mem8, merge_#t~ite13, merge_#t~post9, merge_#t~mem10, merge_#t~post11, merge_#t~mem12, merge_#t~post2, merge_#t~mem17, merge_#t~post16, merge_~a.base, merge_~a.offset, merge_~n, merge_~m, merge_~i~0, merge_~j~0, merge_~k~0, merge_~x~0.base, merge_~x~0.offset;merge_~a.base, merge_~a.offset := merge_#in~a.base, merge_#in~a.offset;merge_~n := merge_#in~n;merge_~m := merge_#in~m;havoc merge_~i~0;havoc merge_~j~0;havoc merge_~k~0;call merge_#t~malloc1.base, merge_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * merge_~n);merge_~x~0.base, merge_~x~0.offset := merge_#t~malloc1.base, merge_#t~malloc1.offset;merge_~i~0 := 0;merge_~j~0 := merge_~m;merge_~k~0 := 0; 32428#L11-3 assume !!(merge_~k~0 < merge_~n); 33475#L12 assume !(merge_~j~0 == merge_~n); 33474#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 33472#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 33473#L14-2 merge_#t~ite14 := merge_#t~ite13; 33468#L13-2 merge_#t~ite15 := merge_#t~ite14; 33469#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 33464#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 33465#L11-3 assume !!(merge_~k~0 < merge_~n); 33477#L12 [2020-11-30 00:32:18,499 INFO L796 eck$LassoCheckResult]: Loop: 33477#L12 assume !(merge_~j~0 == merge_~n); 32413#L13 assume !(merge_~i~0 == merge_~m);call merge_#t~mem7 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~j~0, 4);call merge_#t~mem8 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_~i~0, 4); 32414#L14 assume merge_#t~mem7 < merge_#t~mem8;merge_#t~post9 := merge_~j~0;merge_~j~0 := 1 + merge_#t~post9;call merge_#t~mem10 := read~int(merge_~a.base, merge_~a.offset + 4 * merge_#t~post9, 4);merge_#t~ite13 := merge_#t~mem10; 32436#L14-2 merge_#t~ite14 := merge_#t~ite13; 33482#L13-2 merge_#t~ite15 := merge_#t~ite14; 33481#L12-2 call write~int(merge_#t~ite15, merge_~x~0.base, merge_~x~0.offset + 4 * merge_~k~0, 4);havoc merge_#t~mem10;havoc merge_#t~mem8;havoc merge_#t~post11;havoc merge_#t~mem4;havoc merge_#t~post5;havoc merge_#t~mem12;havoc merge_#t~mem7;havoc merge_#t~ite15;havoc merge_#t~ite14;havoc merge_#t~ite13;havoc merge_#t~post3;havoc merge_#t~mem6;havoc merge_#t~post9; 33480#L11-2 merge_#t~post2 := merge_~k~0;merge_~k~0 := 1 + merge_#t~post2;havoc merge_#t~post2; 33479#L11-3 assume !!(merge_~k~0 < merge_~n); 33477#L12 [2020-11-30 00:32:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:18,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1710153686, now seen corresponding path program 2 times [2020-11-30 00:32:18,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:18,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439756541] [2020-11-30 00:32:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:18,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:18,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:18,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:18,607 INFO L82 PathProgramCache]: Analyzing trace with hash 233986997, now seen corresponding path program 4 times [2020-11-30 00:32:18,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:18,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546223194] [2020-11-30 00:32:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:18,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:18,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:18,618 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:32:18,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1618831734, now seen corresponding path program 3 times [2020-11-30 00:32:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:32:18,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348045702] [2020-11-30 00:32:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:32:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:18,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:32:18,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:32:18,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:32:18,959 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 00:32:22,023 WARN L193 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 285 DAG size of output: 223 [2020-11-30 00:32:22,612 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-11-30 00:32:23,095 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-11-30 00:32:23,729 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-30 00:32:28,421 WARN L193 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 286 DAG size of output: 246 [2020-11-30 00:32:30,572 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 00:32:30,893 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2020-11-30 00:32:31,061 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-30 00:32:32,308 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 159 [2020-11-30 00:32:33,631 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 00:32:37,004 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 209 DAG size of output: 196 [2020-11-30 00:32:38,589 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 173 [2020-11-30 00:32:38,593 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:32:38,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:32:38,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:32:38,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:32:38,593 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:32:38,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:32:38,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:32:38,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:32:38,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: mergeSort.i_Iteration22_Lasso [2020-11-30 00:32:38,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:32:38,594 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:32:38,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:32:39,298 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: MapEliminator tries to combine Int and (Array Int Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceSelectStoreTerm(MapEliminator.java:592) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceStoreTerms(MapEliminator.java:542) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:330) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:278) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:612) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.access$16(LassoCheck.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:957) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:865) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:382) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 00:32:39,303 INFO L168 Benchmark]: Toolchain (without parser) took 88597.68 ms. Allocated memory was 111.1 MB in the beginning and 627.0 MB in the end (delta: 515.9 MB). Free memory was 78.1 MB in the beginning and 381.2 MB in the end (delta: -303.1 MB). Peak memory consumption was 377.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:32:39,303 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 86.0 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:32:39,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.81 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 87.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:32:39,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.36 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:32:39,304 INFO L168 Benchmark]: Boogie Preprocessor took 49.88 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:32:39,305 INFO L168 Benchmark]: RCFGBuilder took 564.10 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 67.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:32:39,305 INFO L168 Benchmark]: BuchiAutomizer took 87575.21 ms. Allocated memory was 111.1 MB in the beginning and 627.0 MB in the end (delta: 515.9 MB). Free memory was 66.5 MB in the beginning and 381.2 MB in the end (delta: -314.7 MB). Peak memory consumption was 367.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:32:39,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 86.0 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.81 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 87.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.36 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.88 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 564.10 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 67.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 87575.21 ms. Allocated memory was 111.1 MB in the beginning and 627.0 MB in the end (delta: 515.9 MB). Free memory was 66.5 MB in the beginning and 381.2 MB in the end (delta: -314.7 MB). Peak memory consumption was 367.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: MapEliminator tries to combine Int and (Array Int Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...