./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/string-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/string-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e655d34f6b59f7cc9a55d4dc4dc525a41685abad 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:46:31,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:46:31,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:46:31,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:46:31,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:46:31,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:46:31,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:46:31,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:46:31,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:46:31,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:46:31,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:46:31,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:46:31,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:46:31,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:46:31,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:46:31,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:46:31,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:46:31,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:46:31,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:46:31,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:46:31,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:46:31,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:46:31,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:46:31,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:46:31,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:46:31,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:46:31,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:46:31,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:46:31,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:46:31,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:46:31,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:46:31,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:46:31,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:46:31,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:46:31,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:46:31,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:46:31,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:46:31,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:46:31,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:46:31,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:46:31,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:46:31,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 11:46:31,246 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:46:31,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:46:31,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:46:31,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:46:31,247 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:46:31,247 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:46:31,248 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:46:31,248 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:46:31,248 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:46:31,248 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:46:31,248 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:46:31,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:46:31,249 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:46:31,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:46:31,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:46:31,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:46:31,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:46:31,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:46:31,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:46:31,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:46:31,250 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:46:31,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:46:31,250 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:46:31,251 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:46:31,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:46:31,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:46:31,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:46:31,251 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:46:31,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:46:31,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:46:31,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:46:31,252 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:46:31,253 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:46:31,253 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e655d34f6b59f7cc9a55d4dc4dc525a41685abad [2019-12-07 11:46:31,365 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:46:31,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:46:31,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:46:31,376 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:46:31,376 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:46:31,377 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/../../sv-benchmarks/c/loops/string-1.i [2019-12-07 11:46:31,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/data/09331ad3a/980f3dff78494ad2881cf613f7ede9df/FLAG936a71b23 [2019-12-07 11:46:31,817 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:46:31,817 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/sv-benchmarks/c/loops/string-1.i [2019-12-07 11:46:31,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/data/09331ad3a/980f3dff78494ad2881cf613f7ede9df/FLAG936a71b23 [2019-12-07 11:46:31,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/data/09331ad3a/980f3dff78494ad2881cf613f7ede9df [2019-12-07 11:46:31,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:46:31,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:46:31,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:46:31,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:46:31,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:46:31,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:46:31" (1/1) ... [2019-12-07 11:46:31,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23694845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:31, skipping insertion in model container [2019-12-07 11:46:31,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:46:31" (1/1) ... [2019-12-07 11:46:31,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:46:31,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:46:31,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:46:32,002 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:46:32,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:46:32,030 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:46:32,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32 WrapperNode [2019-12-07 11:46:32,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:46:32,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:46:32,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:46:32,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:46:32,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:46:32,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:46:32,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:46:32,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:46:32,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... [2019-12-07 11:46:32,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:46:32,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:46:32,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:46:32,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:46:32,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:46:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:46:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:46:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:46:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:46:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:46:32,291 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:46:32,291 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 11:46:32,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:46:32 BoogieIcfgContainer [2019-12-07 11:46:32,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:46:32,292 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:46:32,292 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:46:32,295 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:46:32,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:46:32,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:46:31" (1/3) ... [2019-12-07 11:46:32,296 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d353112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:46:32, skipping insertion in model container [2019-12-07 11:46:32,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:46:32,296 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:46:32" (2/3) ... [2019-12-07 11:46:32,296 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d353112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:46:32, skipping insertion in model container [2019-12-07 11:46:32,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:46:32,296 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:46:32" (3/3) ... [2019-12-07 11:46:32,297 INFO L371 chiAutomizerObserver]: Analyzing ICFG string-1.i [2019-12-07 11:46:32,331 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:46:32,331 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:46:32,331 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:46:32,331 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:46:32,331 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:46:32,331 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:46:32,332 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:46:32,332 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:46:32,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-12-07 11:46:32,355 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2019-12-07 11:46:32,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:32,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:32,359 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 11:46:32,359 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:32,359 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:46:32,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-12-07 11:46:32,361 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2019-12-07 11:46:32,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:32,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:32,362 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 11:46:32,362 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:32,367 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 14#L19-3true [2019-12-07 11:46:32,367 INFO L796 eck$LassoCheckResult]: Loop: 14#L19-3true assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 17#L19-2true main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 14#L19-3true [2019-12-07 11:46:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:32,371 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-12-07 11:46:32,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:32,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893338591] [2019-12-07 11:46:32,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:32,457 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:32,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-12-07 11:46:32,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:32,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701887549] [2019-12-07 11:46:32,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:32,470 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:32,471 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-12-07 11:46:32,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:32,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271729769] [2019-12-07 11:46:32,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:32,499 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:32,647 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:46:32,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:46:32,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:46:32,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:46:32,647 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:46:32,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:46:32,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:46:32,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration1_Lasso [2019-12-07 11:46:32,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:46:32,648 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:46:32,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:32,898 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:46:32,901 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,905 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:32,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:32,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:32,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:32,912 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,915 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 [2019-12-07 11:46:32,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:32,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:32,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:32,919 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,922 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:32,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,924 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:32,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:32,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:32,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:32,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:32,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:32,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:32,932 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:32,936 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:32,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:32,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:32,938 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:32,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,943 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 [2019-12-07 11:46:32,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,946 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:32,947 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:32,950 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:32,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:32,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:32,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:32,957 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,962 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:32,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:32,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:32,970 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:32,973 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 [2019-12-07 11:46:32,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:32,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:32,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:32,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:32,979 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:32,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:32,985 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:46:33,005 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2019-12-07 11:46:33,005 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:33,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:46:33,019 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:46:33,019 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:46:33,020 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_1, ULTIMATE.start_main_~i~0) = 9*v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_1 - 2*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 11:46:33,032 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 11:46:33,037 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 11:46:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,064 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:46:33,065 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,078 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:46:33,078 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:33,112 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 11:46:33,114 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 3 states. [2019-12-07 11:46:33,160 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states.. Second operand 3 states. Result 50 states and 80 transitions. Complement of second has 8 states. [2019-12-07 11:46:33,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 11:46:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:46:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2019-12-07 11:46:33,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 11:46:33,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:33,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 11:46:33,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:33,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 11:46:33,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:33,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 80 transitions. [2019-12-07 11:46:33,168 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 19 states and 28 transitions. [2019-12-07 11:46:33,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 11:46:33,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-12-07 11:46:33,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 28 transitions. [2019-12-07 11:46:33,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:33,173 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-12-07 11:46:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 28 transitions. [2019-12-07 11:46:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 11:46:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 11:46:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2019-12-07 11:46:33,193 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-12-07 11:46:33,193 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-12-07 11:46:33,193 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:46:33,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 28 transitions. [2019-12-07 11:46:33,194 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:33,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:33,194 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 11:46:33,194 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:33,194 INFO L794 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 144#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 129#L19-3 assume !(main_~i~0 < 5); 127#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 128#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 142#L23-3 [2019-12-07 11:46:33,195 INFO L796 eck$LassoCheckResult]: Loop: 142#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 143#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L23-3 [2019-12-07 11:46:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,195 INFO L82 PathProgramCache]: Analyzing trace with hash 28696938, now seen corresponding path program 1 times [2019-12-07 11:46:33,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106912660] [2019-12-07 11:46:33,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:33,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106912660] [2019-12-07 11:46:33,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:46:33,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:46:33,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906369126] [2019-12-07 11:46:33,227 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1891, now seen corresponding path program 1 times [2019-12-07 11:46:33,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655968799] [2019-12-07 11:46:33,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,236 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:46:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:46:33,263 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. cyclomatic complexity: 14 Second operand 3 states. [2019-12-07 11:46:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:33,289 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-12-07 11:46:33,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:46:33,289 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 30 transitions. [2019-12-07 11:46:33,290 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 30 transitions. [2019-12-07 11:46:33,292 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2019-12-07 11:46:33,292 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-12-07 11:46:33,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2019-12-07 11:46:33,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:33,292 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-12-07 11:46:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2019-12-07 11:46:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-12-07 11:46:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 11:46:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-12-07 11:46:33,294 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-12-07 11:46:33,295 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-12-07 11:46:33,295 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 11:46:33,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2019-12-07 11:46:33,295 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:33,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:33,296 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:33,296 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:33,296 INFO L794 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 193#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 178#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 179#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 180#L19-3 assume !(main_~i~0 < 5); 176#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 177#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 191#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 192#L23-2 [2019-12-07 11:46:33,296 INFO L796 eck$LassoCheckResult]: Loop: 192#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 194#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 192#L23-2 [2019-12-07 11:46:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash 265181045, now seen corresponding path program 1 times [2019-12-07 11:46:33,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586505896] [2019-12-07 11:46:33,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:33,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586505896] [2019-12-07 11:46:33,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330921128] [2019-12-07 11:46:33,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,344 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:46:33,345 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:33,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:33,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-07 11:46:33,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180547471] [2019-12-07 11:46:33,351 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 2 times [2019-12-07 11:46:33,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388017215] [2019-12-07 11:46:33,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,358 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:33,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:46:33,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:46:33,379 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-12-07 11:46:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:33,411 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-12-07 11:46:33,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:46:33,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 37 transitions. [2019-12-07 11:46:33,413 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 37 transitions. [2019-12-07 11:46:33,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-12-07 11:46:33,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-12-07 11:46:33,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 37 transitions. [2019-12-07 11:46:33,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:33,414 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-12-07 11:46:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 37 transitions. [2019-12-07 11:46:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2019-12-07 11:46:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 11:46:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-12-07 11:46:33,416 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-12-07 11:46:33,416 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-12-07 11:46:33,416 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 11:46:33,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 29 transitions. [2019-12-07 11:46:33,417 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:33,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:33,417 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:33,417 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:33,417 INFO L794 eck$LassoCheckResult]: Stem: 276#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 273#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 257#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 258#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 259#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 260#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 277#L19-3 assume !(main_~i~0 < 5); 255#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 256#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 274#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 275#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 271#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 272#L23-2 [2019-12-07 11:46:33,418 INFO L796 eck$LassoCheckResult]: Loop: 272#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 278#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 272#L23-2 [2019-12-07 11:46:33,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,418 INFO L82 PathProgramCache]: Analyzing trace with hash 780717205, now seen corresponding path program 1 times [2019-12-07 11:46:33,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707026355] [2019-12-07 11:46:33,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 11:46:33,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707026355] [2019-12-07 11:46:33,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165167880] [2019-12-07 11:46:33,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,471 INFO L264 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:46:33,471 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 11:46:33,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:33,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-12-07 11:46:33,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601184123] [2019-12-07 11:46:33,479 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 3 times [2019-12-07 11:46:33,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850242789] [2019-12-07 11:46:33,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,485 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:46:33,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:46:33,506 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-12-07 11:46:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:33,545 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-12-07 11:46:33,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:46:33,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 44 transitions. [2019-12-07 11:46:33,547 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 44 transitions. [2019-12-07 11:46:33,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-12-07 11:46:33,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-12-07 11:46:33,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2019-12-07 11:46:33,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:33,548 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-12-07 11:46:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2019-12-07 11:46:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-12-07 11:46:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 11:46:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-12-07 11:46:33,550 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 11:46:33,550 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 11:46:33,550 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 11:46:33,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 33 transitions. [2019-12-07 11:46:33,551 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:33,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:33,552 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2019-12-07 11:46:33,552 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:33,552 INFO L794 eck$LassoCheckResult]: Stem: 380#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 376#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 359#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 360#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 384#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 366#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 361#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 362#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 381#L19-3 assume !(main_~i~0 < 5); 357#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 358#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 377#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 378#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 379#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 383#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 374#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 375#L23-2 [2019-12-07 11:46:33,552 INFO L796 eck$LassoCheckResult]: Loop: 375#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 382#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 375#L23-2 [2019-12-07 11:46:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2111137973, now seen corresponding path program 2 times [2019-12-07 11:46:33,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838718195] [2019-12-07 11:46:33,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 11:46:33,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838718195] [2019-12-07 11:46:33,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267005439] [2019-12-07 11:46:33,595 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:33,622 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:46:33,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:46:33,622 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:46:33,623 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 11:46:33,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:33,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-12-07 11:46:33,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156515291] [2019-12-07 11:46:33,631 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 4 times [2019-12-07 11:46:33,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327983339] [2019-12-07 11:46:33,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,636 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:33,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 11:46:33,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:46:33,655 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. cyclomatic complexity: 10 Second operand 7 states. [2019-12-07 11:46:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:33,696 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-12-07 11:46:33,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:46:33,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 51 transitions. [2019-12-07 11:46:33,697 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 51 transitions. [2019-12-07 11:46:33,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-12-07 11:46:33,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-12-07 11:46:33,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 51 transitions. [2019-12-07 11:46:33,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:33,699 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 51 transitions. [2019-12-07 11:46:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 51 transitions. [2019-12-07 11:46:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2019-12-07 11:46:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 11:46:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-12-07 11:46:33,701 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-12-07 11:46:33,701 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-12-07 11:46:33,701 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 11:46:33,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 37 transitions. [2019-12-07 11:46:33,701 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:33,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:33,702 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 3, 1, 1, 1, 1, 1] [2019-12-07 11:46:33,702 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:33,702 INFO L794 eck$LassoCheckResult]: Stem: 504#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 501#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 484#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 485#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 486#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 487#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 491#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 510#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 509#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 506#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 505#L19-3 assume !(main_~i~0 < 5); 482#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 483#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 502#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 503#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 499#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 500#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 513#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 512#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 511#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 508#L23-2 [2019-12-07 11:46:33,702 INFO L796 eck$LassoCheckResult]: Loop: 508#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 507#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 508#L23-2 [2019-12-07 11:46:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash 213314517, now seen corresponding path program 3 times [2019-12-07 11:46:33,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659991742] [2019-12-07 11:46:33,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 11:46:33,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659991742] [2019-12-07 11:46:33,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317369301] [2019-12-07 11:46:33,742 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:33,778 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 11:46:33,778 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:46:33,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:46:33,779 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 11:46:33,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:33,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-07 11:46:33,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714157120] [2019-12-07 11:46:33,786 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 5 times [2019-12-07 11:46:33,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374812223] [2019-12-07 11:46:33,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:33,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 11:46:33,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:46:33,810 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. cyclomatic complexity: 10 Second operand 8 states. [2019-12-07 11:46:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:33,856 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-12-07 11:46:33,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:46:33,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2019-12-07 11:46:33,857 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 46 states and 56 transitions. [2019-12-07 11:46:33,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2019-12-07 11:46:33,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-12-07 11:46:33,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 56 transitions. [2019-12-07 11:46:33,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:33,858 INFO L688 BuchiCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-12-07 11:46:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 56 transitions. [2019-12-07 11:46:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2019-12-07 11:46:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 11:46:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-12-07 11:46:33,860 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-12-07 11:46:33,860 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-12-07 11:46:33,860 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 11:46:33,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 41 transitions. [2019-12-07 11:46:33,861 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-12-07 11:46:33,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:33,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:33,861 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 1, 1, 1, 1, 1] [2019-12-07 11:46:33,862 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:33,862 INFO L794 eck$LassoCheckResult]: Stem: 648#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 646#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 630#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 631#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 632#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 633#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 655#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 654#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 653#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 652#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 651#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 650#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 649#L19-3 assume !(main_~i~0 < 5); 628#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 629#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 644#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 645#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 647#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 663#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 662#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 661#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 660#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 659#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 658#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 657#L23-2 [2019-12-07 11:46:33,862 INFO L796 eck$LassoCheckResult]: Loop: 657#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 656#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 657#L23-2 [2019-12-07 11:46:33,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1212159477, now seen corresponding path program 4 times [2019-12-07 11:46:33,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231783403] [2019-12-07 11:46:33,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,906 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 6 times [2019-12-07 11:46:33,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789764496] [2019-12-07 11:46:33,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:33,913 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash 949121171, now seen corresponding path program 5 times [2019-12-07 11:46:33,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:33,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401887737] [2019-12-07 11:46:33,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-12-07 11:46:33,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401887737] [2019-12-07 11:46:33,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:46:33,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 11:46:33,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139145772] [2019-12-07 11:46:34,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:34,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:46:34,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:46:34,012 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. cyclomatic complexity: 10 Second operand 9 states. [2019-12-07 11:46:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:34,058 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-12-07 11:46:34,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 11:46:34,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2019-12-07 11:46:34,059 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2019-12-07 11:46:34,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 37 states and 41 transitions. [2019-12-07 11:46:34,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 11:46:34,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 11:46:34,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 41 transitions. [2019-12-07 11:46:34,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:46:34,060 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-12-07 11:46:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 41 transitions. [2019-12-07 11:46:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-12-07 11:46:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 11:46:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-12-07 11:46:34,063 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-12-07 11:46:34,063 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-12-07 11:46:34,063 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 11:46:34,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 40 transitions. [2019-12-07 11:46:34,063 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2019-12-07 11:46:34,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:34,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:34,064 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:34,064 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:34,065 INFO L794 eck$LassoCheckResult]: Stem: 735#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 733#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 717#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 718#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 719#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 720#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 750#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 749#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 748#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 747#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 746#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 737#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 736#L19-3 assume !(main_~i~0 < 5); 715#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 716#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 731#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 732#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 734#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 745#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 744#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 743#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 742#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 741#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 740#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 739#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 738#L23-3 assume !(main_~i~0 < 5); 729#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 730#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 723#L28-3 [2019-12-07 11:46:34,065 INFO L796 eck$LassoCheckResult]: Loop: 723#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 721#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 723#L28-3 [2019-12-07 11:46:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1572377782, now seen corresponding path program 1 times [2019-12-07 11:46:34,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:34,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338963087] [2019-12-07 11:46:34,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:34,096 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:34,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2406, now seen corresponding path program 1 times [2019-12-07 11:46:34,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:34,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954772526] [2019-12-07 11:46:34,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:34,101 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash -773438245, now seen corresponding path program 1 times [2019-12-07 11:46:34,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:34,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750592138] [2019-12-07 11:46:34,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:34,131 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:37,035 WARN L192 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 217 DAG size of output: 161 [2019-12-07 11:46:37,176 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-12-07 11:46:37,178 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:46:37,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:46:37,178 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:46:37,178 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:46:37,178 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:46:37,178 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:37,178 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:46:37,178 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:46:37,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration8_Lasso [2019-12-07 11:46:37,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:46:37,179 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:46:37,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:37,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:46:37,420 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,426 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,434 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:37,438 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 [2019-12-07 11:46:37,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,440 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,445 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,447 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:37,451 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,453 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,453 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,456 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:37,460 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,467 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 [2019-12-07 11:46:37,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,469 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,475 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,475 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,480 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,483 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,488 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,496 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,497 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,501 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:37,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,510 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,516 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,516 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,519 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,526 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,526 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,530 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,538 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,540 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,540 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,547 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,561 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,561 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,564 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,568 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,570 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,576 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:37,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:37,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:37,579 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,585 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,585 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:37,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:37,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:37,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:37,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:37,595 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:37,595 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:37,601 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:46:37,610 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-12-07 11:46:37,611 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:37,613 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:46:37,617 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:46:37,618 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:46:37,618 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_2, ULTIMATE.start_main_~#string_A~0.offset, ULTIMATE.start_main_~nc_A~0) = 1*v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_2 - 1*ULTIMATE.start_main_~#string_A~0.offset - 1*ULTIMATE.start_main_~nc_A~0 Supporting invariants [] [2019-12-07 11:46:37,628 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 11:46:37,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 11:46:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:37,649 INFO L264 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:46:37,650 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:37,654 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:46:37,655 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:37,662 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 [2019-12-07 11:46:37,663 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 40 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 11:46:37,674 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 40 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 44 states and 52 transitions. Complement of second has 4 states. [2019-12-07 11:46:37,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:46:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:46:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2019-12-07 11:46:37,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 28 letters. Loop has 2 letters. [2019-12-07 11:46:37,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:37,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 30 letters. Loop has 2 letters. [2019-12-07 11:46:37,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:37,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 28 letters. Loop has 4 letters. [2019-12-07 11:46:37,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:37,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 52 transitions. [2019-12-07 11:46:37,676 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 11:46:37,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 38 states and 43 transitions. [2019-12-07 11:46:37,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-12-07 11:46:37,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 11:46:37,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 43 transitions. [2019-12-07 11:46:37,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:37,677 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-12-07 11:46:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 43 transitions. [2019-12-07 11:46:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-12-07 11:46:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 11:46:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-12-07 11:46:37,679 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-12-07 11:46:37,679 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-12-07 11:46:37,679 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 11:46:37,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 43 transitions. [2019-12-07 11:46:37,679 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 11:46:37,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:37,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:37,680 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:37,680 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:37,680 INFO L794 eck$LassoCheckResult]: Stem: 943#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 940#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 923#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 924#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 925#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 926#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 951#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 950#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 949#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 948#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 947#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 946#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 945#L19-3 assume !(main_~i~0 < 5); 921#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 922#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 941#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 942#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 938#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 939#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 958#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 957#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 956#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 955#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 954#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 953#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 952#L23-3 assume !(main_~i~0 < 5); 936#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 937#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 944#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 927#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 928#L28-4 main_~nc_B~0 := 0; 934#L32-3 [2019-12-07 11:46:37,680 INFO L796 eck$LassoCheckResult]: Loop: 934#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 935#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 934#L32-3 [2019-12-07 11:46:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:37,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1793218173, now seen corresponding path program 1 times [2019-12-07 11:46:37,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:37,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266374801] [2019-12-07 11:46:37,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:37,701 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2854, now seen corresponding path program 1 times [2019-12-07 11:46:37,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:37,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702880727] [2019-12-07 11:46:37,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:37,705 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:37,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1000780450, now seen corresponding path program 1 times [2019-12-07 11:46:37,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:37,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298384249] [2019-12-07 11:46:37,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:37,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:40,361 WARN L192 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 228 DAG size of output: 171 [2019-12-07 11:46:40,479 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-12-07 11:46:40,481 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:46:40,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:46:40,481 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:46:40,481 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:46:40,481 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:46:40,482 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:40,482 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:46:40,482 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:46:40,482 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration9_Lasso [2019-12-07 11:46:40,482 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:46:40,482 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:46:40,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:40,717 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:46:40,717 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:40,719 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:40,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:40,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:40,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:40,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:40,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:40,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:40,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:40,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:40,726 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:40,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:40,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:40,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:40,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:40,728 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:40,728 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:40,731 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:40,734 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 [2019-12-07 11:46:40,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:40,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:40,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:40,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:40,737 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:40,737 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:40,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:40,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:40,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:40,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:40,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:40,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:40,750 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:40,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:40,759 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:46:40,775 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2019-12-07 11:46:40,775 INFO L444 ModelExtractionUtils]: 12 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:40,777 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:46:40,779 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:46:40,779 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:46:40,779 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~#string_B~0.offset, ULTIMATE.start_main_~nc_B~0, v_rep(select #length ULTIMATE.start_main_~#string_B~0.base)_3) = -1*ULTIMATE.start_main_~#string_B~0.offset - 1*ULTIMATE.start_main_~nc_B~0 + 1*v_rep(select #length ULTIMATE.start_main_~#string_B~0.base)_3 Supporting invariants [] [2019-12-07 11:46:40,789 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 11:46:40,790 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 11:46:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:40,809 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:46:40,810 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:40,814 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:46:40,814 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:40,822 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 [2019-12-07 11:46:40,823 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 43 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-12-07 11:46:40,832 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 43 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 43 states and 51 transitions. Complement of second has 4 states. [2019-12-07 11:46:40,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:46:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:46:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2019-12-07 11:46:40,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 31 letters. Loop has 2 letters. [2019-12-07 11:46:40,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:40,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 33 letters. Loop has 2 letters. [2019-12-07 11:46:40,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:40,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 31 letters. Loop has 4 letters. [2019-12-07 11:46:40,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:40,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 51 transitions. [2019-12-07 11:46:40,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:40,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 40 states and 46 transitions. [2019-12-07 11:46:40,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-12-07 11:46:40,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 11:46:40,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 46 transitions. [2019-12-07 11:46:40,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:40,835 INFO L688 BuchiCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-12-07 11:46:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 46 transitions. [2019-12-07 11:46:40,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-12-07 11:46:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 11:46:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-12-07 11:46:40,837 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-12-07 11:46:40,837 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-12-07 11:46:40,837 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 11:46:40,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 46 transitions. [2019-12-07 11:46:40,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:40,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:40,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:40,838 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:40,838 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:40,838 INFO L794 eck$LassoCheckResult]: Stem: 1161#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1158#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1139#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1140#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1141#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1142#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1169#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1168#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1167#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1166#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1165#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1164#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1163#L19-3 assume !(main_~i~0 < 5); 1137#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1138#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1159#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1160#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1156#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1157#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1176#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1175#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1174#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1173#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1172#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1171#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1170#L23-3 assume !(main_~i~0 < 5); 1154#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1155#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1162#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1143#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1144#L28-4 main_~nc_B~0 := 0; 1150#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1152#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1147#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1148#L41-2 [2019-12-07 11:46:40,838 INFO L796 eck$LassoCheckResult]: Loop: 1148#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1149#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1148#L41-2 [2019-12-07 11:46:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash 959422888, now seen corresponding path program 1 times [2019-12-07 11:46:40,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:40,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671722882] [2019-12-07 11:46:40,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:40,861 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 1 times [2019-12-07 11:46:40,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:40,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888262894] [2019-12-07 11:46:40,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:40,865 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:40,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1412570677, now seen corresponding path program 1 times [2019-12-07 11:46:40,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:40,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869489085] [2019-12-07 11:46:40,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-12-07 11:46:40,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869489085] [2019-12-07 11:46:40,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:46:40,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:46:40,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840031977] [2019-12-07 11:46:40,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:40,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:46:40,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:46:40,927 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-12-07 11:46:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:40,936 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2019-12-07 11:46:40,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:46:40,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 56 transitions. [2019-12-07 11:46:40,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:40,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 41 states and 46 transitions. [2019-12-07 11:46:40,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 11:46:40,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 11:46:40,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 46 transitions. [2019-12-07 11:46:40,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:40,937 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-12-07 11:46:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 46 transitions. [2019-12-07 11:46:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-12-07 11:46:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 11:46:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2019-12-07 11:46:40,939 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-12-07 11:46:40,939 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-12-07 11:46:40,939 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 11:46:40,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 45 transitions. [2019-12-07 11:46:40,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:40,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:40,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:40,940 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:40,940 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:40,940 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1257#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1237#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1238#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1239#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1240#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1245#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1266#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1265#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1264#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1263#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1262#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1261#L19-3 assume !(main_~i~0 < 5); 1235#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1236#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1255#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1256#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1258#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1274#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1273#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1272#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1271#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1270#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1269#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1268#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1267#L23-3 assume !(main_~i~0 < 5); 1253#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1254#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1260#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1243#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1244#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1241#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1242#L28-4 main_~nc_B~0 := 0; 1249#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1250#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1246#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1247#L41-2 [2019-12-07 11:46:40,940 INFO L796 eck$LassoCheckResult]: Loop: 1247#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1248#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1247#L41-2 [2019-12-07 11:46:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash 94364173, now seen corresponding path program 1 times [2019-12-07 11:46:40,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:40,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338235993] [2019-12-07 11:46:40,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-12-07 11:46:40,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338235993] [2019-12-07 11:46:40,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239952865] [2019-12-07 11:46:40,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:41,016 INFO L264 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:46:41,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-12-07 11:46:41,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:46:41,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2019-12-07 11:46:41,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887924313] [2019-12-07 11:46:41,031 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 2 times [2019-12-07 11:46:41,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:41,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496542754] [2019-12-07 11:46:41,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,035 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:41,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:41,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:46:41,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:46:41,072 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-12-07 11:46:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:41,087 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-12-07 11:46:41,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:46:41,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 48 transitions. [2019-12-07 11:46:41,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:41,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 46 transitions. [2019-12-07 11:46:41,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 11:46:41,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 11:46:41,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2019-12-07 11:46:41,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:41,089 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-12-07 11:46:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2019-12-07 11:46:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-12-07 11:46:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 11:46:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-12-07 11:46:41,091 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-12-07 11:46:41,091 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-12-07 11:46:41,091 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-12-07 11:46:41,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 44 transitions. [2019-12-07 11:46:41,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:41,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:41,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:41,093 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:41,093 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:41,093 INFO L794 eck$LassoCheckResult]: Stem: 1459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1457#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1438#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1439#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1440#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1441#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1467#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1466#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1465#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1464#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1463#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1462#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1461#L19-3 assume !(main_~i~0 < 5); 1436#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1437#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1455#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1456#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1458#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1475#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1474#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1473#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1472#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1471#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1470#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1469#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1468#L23-3 assume !(main_~i~0 < 5); 1453#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1454#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1460#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1444#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1445#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1442#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1443#L28-4 main_~nc_B~0 := 0; 1449#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1450#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 1451#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1452#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1446#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1447#L41-2 [2019-12-07 11:46:41,093 INFO L796 eck$LassoCheckResult]: Loop: 1447#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1448#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1447#L41-2 [2019-12-07 11:46:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash 489706120, now seen corresponding path program 1 times [2019-12-07 11:46:41,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:41,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341113530] [2019-12-07 11:46:41,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,124 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 3 times [2019-12-07 11:46:41,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:41,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259212264] [2019-12-07 11:46:41,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,129 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1838818645, now seen corresponding path program 1 times [2019-12-07 11:46:41,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:41,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949243008] [2019-12-07 11:46:41,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:41,152 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:44,546 WARN L192 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 265 DAG size of output: 199 [2019-12-07 11:46:44,744 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 11:46:44,746 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:46:44,746 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:46:44,746 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:46:44,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:46:44,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:46:44,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:44,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:46:44,747 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:46:44,747 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration12_Lasso [2019-12-07 11:46:44,747 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:46:44,747 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:46:44,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:44,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:45,256 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:46:45,256 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,274 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,281 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,287 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,293 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,299 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,301 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,301 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,304 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,317 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,320 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,323 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,327 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,329 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,329 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,331 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,341 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 [2019-12-07 11:46:45,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,344 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,350 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,353 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,360 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,361 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,368 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,371 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,374 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,379 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,380 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,382 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,385 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,390 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,395 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,395 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,397 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,404 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,404 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,406 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,411 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:45,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:45,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:45,413 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,416 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 [2019-12-07 11:46:45,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,419 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,423 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,427 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,429 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,438 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2019-12-07 11:46:45,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,441 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2019-12-07 11:46:45,441 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:45,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:45,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,474 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,474 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,479 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 [2019-12-07 11:46:45,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:45,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:45,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:45,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:45,484 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:45,485 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:45,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:46:45,530 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2019-12-07 11:46:45,530 INFO L444 ModelExtractionUtils]: 1 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:45,532 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:46:45,534 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:46:45,534 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:46:45,534 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nc_B~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~nc_B~0 Supporting invariants [] [2019-12-07 11:46:45,575 INFO L297 tatePredicateManager]: 14 out of 14 supporting invariants were superfluous and have been removed [2019-12-07 11:46:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:45,597 INFO L264 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:46:45,598 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:45,603 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:46:45,603 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:45,610 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 [2019-12-07 11:46:45,610 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 44 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 11:46:45,617 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 44 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 44 states and 50 transitions. Complement of second has 5 states. [2019-12-07 11:46:45,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:46:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:46:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2019-12-07 11:46:45,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 38 letters. Loop has 2 letters. [2019-12-07 11:46:45,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:45,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 40 letters. Loop has 2 letters. [2019-12-07 11:46:45,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:45,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 38 letters. Loop has 4 letters. [2019-12-07 11:46:45,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:45,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 50 transitions. [2019-12-07 11:46:45,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:45,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 50 transitions. [2019-12-07 11:46:45,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2019-12-07 11:46:45,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 11:46:45,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 50 transitions. [2019-12-07 11:46:45,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:45,620 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-12-07 11:46:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 50 transitions. [2019-12-07 11:46:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-12-07 11:46:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-12-07 11:46:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2019-12-07 11:46:45,622 INFO L711 BuchiCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-12-07 11:46:45,622 INFO L591 BuchiCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-12-07 11:46:45,622 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-12-07 11:46:45,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 50 transitions. [2019-12-07 11:46:45,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:45,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:45,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:45,622 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:45,623 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:45,623 INFO L794 eck$LassoCheckResult]: Stem: 1745#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1742#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1719#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1720#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1721#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1722#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1753#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1752#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1751#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1750#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1749#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1748#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1747#L19-3 assume !(main_~i~0 < 5); 1717#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1718#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1743#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1744#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1740#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1741#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1760#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1759#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1758#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1757#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1756#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1755#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1754#L23-3 assume !(main_~i~0 < 5); 1738#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1739#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1746#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1725#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1726#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1723#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1724#L28-4 main_~nc_B~0 := 0; 1734#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1735#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 1736#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1737#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1727#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1728#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1733#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 1729#L41-2 [2019-12-07 11:46:45,623 INFO L796 eck$LassoCheckResult]: Loop: 1729#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1730#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1729#L41-2 [2019-12-07 11:46:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1838818643, now seen corresponding path program 1 times [2019-12-07 11:46:45,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:45,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100181379] [2019-12-07 11:46:45,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:45,641 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 4 times [2019-12-07 11:46:45,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:45,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842800642] [2019-12-07 11:46:45,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:45,645 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1873154672, now seen corresponding path program 1 times [2019-12-07 11:46:45,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:45,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172841460] [2019-12-07 11:46:45,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-12-07 11:46:45,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172841460] [2019-12-07 11:46:45,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350996096] [2019-12-07 11:46:45,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:45,715 INFO L264 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:46:45,716 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-12-07 11:46:45,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:45,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-12-07 11:46:45,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778688597] [2019-12-07 11:46:45,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:45,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:46:45,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:46:45,779 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. cyclomatic complexity: 11 Second operand 9 states. [2019-12-07 11:46:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:45,826 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2019-12-07 11:46:45,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:46:45,826 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 66 transitions. [2019-12-07 11:46:45,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:45,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 47 states and 53 transitions. [2019-12-07 11:46:45,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 11:46:45,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 11:46:45,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 53 transitions. [2019-12-07 11:46:45,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:45,828 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-12-07 11:46:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 53 transitions. [2019-12-07 11:46:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-12-07 11:46:45,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 11:46:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-12-07 11:46:45,830 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-12-07 11:46:45,830 INFO L591 BuchiCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-12-07 11:46:45,831 INFO L424 BuchiCegarLoop]: ======== Iteration 14============ [2019-12-07 11:46:45,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 52 transitions. [2019-12-07 11:46:45,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:45,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:45,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:45,832 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:45,832 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:45,832 INFO L794 eck$LassoCheckResult]: Stem: 1986#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1984#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1961#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1962#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1963#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1964#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1996#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1995#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1994#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1993#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1992#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1990#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1989#L19-3 assume !(main_~i~0 < 5); 1959#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1960#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1982#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1983#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1985#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2004#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2003#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2002#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2001#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2000#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1999#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1998#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1997#L23-3 assume !(main_~i~0 < 5); 1980#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1981#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1987#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1967#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1968#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1988#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1991#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1965#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1966#L28-4 main_~nc_B~0 := 0; 1976#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1977#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 1978#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1979#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1969#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1970#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1975#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 1971#L41-2 [2019-12-07 11:46:45,832 INFO L796 eck$LassoCheckResult]: Loop: 1971#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1972#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1971#L41-2 [2019-12-07 11:46:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1199867054, now seen corresponding path program 2 times [2019-12-07 11:46:45,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:45,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904699144] [2019-12-07 11:46:45,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-12-07 11:46:45,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904699144] [2019-12-07 11:46:45,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814941427] [2019-12-07 11:46:45,888 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:45,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:46:45,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:46:45,922 INFO L264 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:46:45,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-12-07 11:46:45,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:45,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-12-07 11:46:45,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048155557] [2019-12-07 11:46:45,960 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:46:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 5 times [2019-12-07 11:46:45,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:45,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51183389] [2019-12-07 11:46:45,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:45,963 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:45,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 11:46:45,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2019-12-07 11:46:45,999 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. cyclomatic complexity: 11 Second operand 13 states. [2019-12-07 11:46:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:46,043 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2019-12-07 11:46:46,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 11:46:46,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 58 transitions. [2019-12-07 11:46:46,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:46,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 50 states and 56 transitions. [2019-12-07 11:46:46,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 11:46:46,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 11:46:46,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 56 transitions. [2019-12-07 11:46:46,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:46,045 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 56 transitions. [2019-12-07 11:46:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 56 transitions. [2019-12-07 11:46:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-12-07 11:46:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 11:46:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2019-12-07 11:46:46,047 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 54 transitions. [2019-12-07 11:46:46,047 INFO L591 BuchiCegarLoop]: Abstraction has 48 states and 54 transitions. [2019-12-07 11:46:46,047 INFO L424 BuchiCegarLoop]: ======== Iteration 15============ [2019-12-07 11:46:46,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 54 transitions. [2019-12-07 11:46:46,047 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:46,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:46,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:46,048 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:46,048 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:46,048 INFO L794 eck$LassoCheckResult]: Stem: 2226#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2224#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 2200#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2201#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2202#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2203#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2237#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2236#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2235#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2233#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2232#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2230#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2229#L19-3 assume !(main_~i~0 < 5); 2198#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 2199#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 2221#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2222#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2225#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2245#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2244#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2243#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2242#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2241#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2240#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2239#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2238#L23-3 assume !(main_~i~0 < 5); 2219#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 2220#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 2227#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2206#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2207#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2228#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2231#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2204#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 2205#L28-4 main_~nc_B~0 := 0; 2215#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2216#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2217#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2218#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2234#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2223#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 2208#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 2209#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2214#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2210#L41-2 [2019-12-07 11:46:46,048 INFO L796 eck$LassoCheckResult]: Loop: 2210#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2211#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 2210#L41-2 [2019-12-07 11:46:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:46,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1976327923, now seen corresponding path program 3 times [2019-12-07 11:46:46,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:46,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714103268] [2019-12-07 11:46:46,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:46,073 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 6 times [2019-12-07 11:46:46,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:46,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824113387] [2019-12-07 11:46:46,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:46,077 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash -875586576, now seen corresponding path program 2 times [2019-12-07 11:46:46,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:46,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513628027] [2019-12-07 11:46:46,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:46,104 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:48,224 WARN L192 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 314 DAG size of output: 233 [2019-12-07 11:46:48,387 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-12-07 11:46:48,390 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:46:48,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:46:48,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:46:48,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:46:48,390 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:46:48,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:48,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:46:48,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:46:48,390 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration15_Lasso [2019-12-07 11:46:48,391 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:46:48,391 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:46:48,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,850 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-12-07 11:46:48,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:48,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:49,736 WARN L192 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-12-07 11:46:49,861 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:46:49,861 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,866 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,873 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,878 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,881 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 [2019-12-07 11:46:49,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,883 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:49,883 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,886 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,891 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:49,891 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,893 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,899 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:49,903 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,905 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,908 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,910 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:49,910 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,917 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 [2019-12-07 11:46:49,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,919 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:49,919 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,921 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,926 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:46:49,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,927 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:46:49,927 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,935 INFO L203 nArgumentSynthesizer]: 12 stem disjuncts [2019-12-07 11:46:49,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,945 INFO L401 nArgumentSynthesizer]: We have 28 Motzkin's Theorem applications. [2019-12-07 11:46:49,945 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,969 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,973 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 [2019-12-07 11:46:49,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,975 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:49,975 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,981 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,983 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:49,983 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:49,984 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,988 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:49,993 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:49,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:49,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:49,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:49,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:49,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:49,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:49,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:49,996 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:50,000 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,002 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:50,002 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:50,006 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:50,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:50,011 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:50,014 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,017 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,019 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:50,019 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:50,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,028 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:50,028 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:50,030 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:50,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:50,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:50,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:50,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:50,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:50,042 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,045 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:50,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:50,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:50,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:50,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:50,051 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:50,051 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:50,063 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:46:50,096 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2019-12-07 11:46:50,096 INFO L444 ModelExtractionUtils]: 1 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,098 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:46:50,100 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:46:50,100 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:46:50,100 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nc_A~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nc_A~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 11:46:50,227 INFO L297 tatePredicateManager]: 41 out of 41 supporting invariants were superfluous and have been removed [2019-12-07 11:46:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:50,252 INFO L264 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:46:50,253 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:50,257 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:46:50,258 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:50,264 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 [2019-12-07 11:46:50,264 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 54 transitions. cyclomatic complexity: 11 Second operand 3 states. [2019-12-07 11:46:50,271 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 54 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 52 states and 60 transitions. Complement of second has 5 states. [2019-12-07 11:46:50,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:46:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:46:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2019-12-07 11:46:50,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 44 letters. Loop has 2 letters. [2019-12-07 11:46:50,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:50,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 46 letters. Loop has 2 letters. [2019-12-07 11:46:50,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:50,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 44 letters. Loop has 4 letters. [2019-12-07 11:46:50,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:50,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 60 transitions. [2019-12-07 11:46:50,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:50,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 52 states and 60 transitions. [2019-12-07 11:46:50,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-12-07 11:46:50,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-12-07 11:46:50,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 60 transitions. [2019-12-07 11:46:50,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:50,274 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-12-07 11:46:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 60 transitions. [2019-12-07 11:46:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 11:46:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 11:46:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2019-12-07 11:46:50,276 INFO L711 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-12-07 11:46:50,276 INFO L591 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-12-07 11:46:50,276 INFO L424 BuchiCegarLoop]: ======== Iteration 16============ [2019-12-07 11:46:50,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 60 transitions. [2019-12-07 11:46:50,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:50,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:50,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:50,277 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:50,277 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:50,277 INFO L794 eck$LassoCheckResult]: Stem: 2651#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2648#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 2623#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2624#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2625#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2626#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2661#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2660#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2659#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2658#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2657#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2655#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2654#L19-3 assume !(main_~i~0 < 5); 2621#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 2622#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 2646#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2647#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2650#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2670#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2669#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2668#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2667#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2666#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2665#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2664#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2663#L23-3 assume !(main_~i~0 < 5); 2642#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 2643#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 2652#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2629#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2630#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2653#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2656#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2627#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 2628#L28-4 main_~nc_B~0 := 0; 2638#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2639#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2640#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2641#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2662#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2649#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 2631#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 2632#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2644#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2645#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2637#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2633#L41-2 [2019-12-07 11:46:50,277 INFO L796 eck$LassoCheckResult]: Loop: 2633#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2634#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 2633#L41-2 [2019-12-07 11:46:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -875586574, now seen corresponding path program 4 times [2019-12-07 11:46:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527543815] [2019-12-07 11:46:50,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,304 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,305 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 7 times [2019-12-07 11:46:50,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345815701] [2019-12-07 11:46:50,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,308 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,308 INFO L82 PathProgramCache]: Analyzing trace with hash 374894997, now seen corresponding path program 3 times [2019-12-07 11:46:50,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827324500] [2019-12-07 11:46:50,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-07 11:46:50,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827324500] [2019-12-07 11:46:50,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914741666] [2019-12-07 11:46:50,353 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:46:50,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 11:46:50,391 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:46:50,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:46:50,393 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-07 11:46:50,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:50,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-12-07 11:46:50,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51190829] [2019-12-07 11:46:50,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:50,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 11:46:50,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-12-07 11:46:50,456 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-12-07 11:46:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:50,575 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2019-12-07 11:46:50,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 11:46:50,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 78 transitions. [2019-12-07 11:46:50,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:50,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 55 states and 63 transitions. [2019-12-07 11:46:50,577 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-12-07 11:46:50,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-12-07 11:46:50,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 63 transitions. [2019-12-07 11:46:50,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:50,577 INFO L688 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-12-07 11:46:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 63 transitions. [2019-12-07 11:46:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-12-07 11:46:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 11:46:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2019-12-07 11:46:50,579 INFO L711 BuchiCegarLoop]: Abstraction has 54 states and 62 transitions. [2019-12-07 11:46:50,579 INFO L591 BuchiCegarLoop]: Abstraction has 54 states and 62 transitions. [2019-12-07 11:46:50,579 INFO L424 BuchiCegarLoop]: ======== Iteration 17============ [2019-12-07 11:46:50,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 62 transitions. [2019-12-07 11:46:50,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:50,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:50,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:50,579 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:50,580 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:50,580 INFO L794 eck$LassoCheckResult]: Stem: 2937#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2934#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 2911#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2912#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2913#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2914#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2947#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2946#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2945#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2944#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2943#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2941#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2940#L19-3 assume !(main_~i~0 < 5); 2909#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 2910#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 2932#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2933#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2936#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2957#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2956#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2955#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2954#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2953#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2952#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2951#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2950#L23-3 assume !(main_~i~0 < 5); 2930#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 2931#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 2938#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2917#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2918#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2939#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2942#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2915#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 2916#L28-4 main_~nc_B~0 := 0; 2926#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2927#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2928#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2929#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2958#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2949#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2948#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2935#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 2919#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 2920#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2960#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2959#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2925#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2921#L41-2 [2019-12-07 11:46:50,580 INFO L796 eck$LassoCheckResult]: Loop: 2921#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2922#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 2921#L41-2 [2019-12-07 11:46:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash 356019245, now seen corresponding path program 5 times [2019-12-07 11:46:50,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575345329] [2019-12-07 11:46:50,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,615 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:50,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,616 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 8 times [2019-12-07 11:46:50,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278193738] [2019-12-07 11:46:50,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1462886640, now seen corresponding path program 4 times [2019-12-07 11:46:50,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072201924] [2019-12-07 11:46:50,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-12-07 11:46:50,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072201924] [2019-12-07 11:46:50,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690705287] [2019-12-07 11:46:50,671 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:50,718 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:46:50,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:46:50,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:46:50,720 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-12-07 11:46:50,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:46:50,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-12-07 11:46:50,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200085377] [2019-12-07 11:46:50,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:46:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 11:46:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 11:46:50,800 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-12-07 11:46:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:46:50,888 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2019-12-07 11:46:50,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 11:46:50,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 90 transitions. [2019-12-07 11:46:50,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:50,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 57 states and 65 transitions. [2019-12-07 11:46:50,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-12-07 11:46:50,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-12-07 11:46:50,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 65 transitions. [2019-12-07 11:46:50,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:50,889 INFO L688 BuchiCegarLoop]: Abstraction has 57 states and 65 transitions. [2019-12-07 11:46:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 65 transitions. [2019-12-07 11:46:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-12-07 11:46:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 11:46:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-12-07 11:46:50,891 INFO L711 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-12-07 11:46:50,891 INFO L591 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-12-07 11:46:50,891 INFO L424 BuchiCegarLoop]: ======== Iteration 18============ [2019-12-07 11:46:50,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 64 transitions. [2019-12-07 11:46:50,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:46:50,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:50,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:50,892 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:50,892 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:50,892 INFO L794 eck$LassoCheckResult]: Stem: 3241#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3238#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 3214#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3215#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3216#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3217#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3254#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3251#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3250#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3249#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3248#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3245#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3244#L19-3 assume !(main_~i~0 < 5); 3212#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 3213#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 3236#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3237#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3240#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3263#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3262#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3261#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3260#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3259#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3258#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3257#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3256#L23-3 assume !(main_~i~0 < 5); 3233#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 3234#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 3242#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3220#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 3221#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3243#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 3264#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3247#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 3246#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3218#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 3219#L28-4 main_~nc_B~0 := 0; 3229#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3230#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 3231#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3232#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 3255#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3253#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 3252#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3239#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 3222#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 3223#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 3227#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 3235#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 3265#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 3224#L41-2 [2019-12-07 11:46:50,892 INFO L796 eck$LassoCheckResult]: Loop: 3224#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 3225#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 3224#L41-2 [2019-12-07 11:46:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1412851758, now seen corresponding path program 6 times [2019-12-07 11:46:50,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899051914] [2019-12-07 11:46:50,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,930 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:50,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,931 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 9 times [2019-12-07 11:46:50,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134781967] [2019-12-07 11:46:50,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:50,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:50,936 INFO L82 PathProgramCache]: Analyzing trace with hash -540871307, now seen corresponding path program 5 times [2019-12-07 11:46:50,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:50,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109340500] [2019-12-07 11:46:50,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:50,966 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:53,942 WARN L192 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 362 DAG size of output: 267 [2019-12-07 11:46:54,177 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:46:54,180 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:46:54,180 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:46:54,180 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:46:54,180 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:46:54,180 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:46:54,180 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:54,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:46:54,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:46:54,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration18_Lasso [2019-12-07 11:46:54,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:46:54,180 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:46:54,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:54,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:55,073 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2019-12-07 11:46:55,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:55,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:46:55,298 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:46:57,236 WARN L192 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2019-12-07 11:46:57,308 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:46:57,308 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:57,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,316 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:57,316 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:57,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,332 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,337 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,340 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 [2019-12-07 11:46:57,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,344 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:57,344 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:57,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,352 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,358 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,363 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,363 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,364 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,369 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:57,369 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:57,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,376 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,376 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,384 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,389 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,392 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,399 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,402 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,405 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,408 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,412 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:46:57,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:46:57,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:46:57,415 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,419 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,420 INFO L203 nArgumentSynthesizer]: 36 stem disjuncts [2019-12-07 11:46:57,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,443 INFO L401 nArgumentSynthesizer]: We have 76 Motzkin's Theorem applications. [2019-12-07 11:46:57,443 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:57,501 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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) Waiting until toolchain timeout for monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:46:57,505 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:46:57,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:46:57,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:46:57,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:46:57,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:46:57,510 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:46:57,511 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:46:57,523 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:46:57,562 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-12-07 11:46:57,562 INFO L444 ModelExtractionUtils]: 3 out of 28 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:46:57,564 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:46:57,566 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:46:57,566 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:46:57,566 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2019-12-07 11:46:57,695 INFO L297 tatePredicateManager]: 38 out of 40 supporting invariants were superfluous and have been removed [2019-12-07 11:46:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:57,742 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 11:46:57,743 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:57,855 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:46:57,855 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:57,871 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.10 stem predicates 2 loop predicates [2019-12-07 11:46:57,871 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-12-07 11:46:57,993 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14. Second operand 12 states. Result 91 states and 110 transitions. Complement of second has 15 states. [2019-12-07 11:46:57,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2019-12-07 11:46:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 11:46:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 55 transitions. [2019-12-07 11:46:57,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 55 transitions. Stem has 50 letters. Loop has 2 letters. [2019-12-07 11:46:57,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:57,994 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:46:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:58,032 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 11:46:58,033 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:58,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:46:58,150 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:58,166 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.10 stem predicates 2 loop predicates [2019-12-07 11:46:58,166 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-12-07 11:46:58,286 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14. Second operand 12 states. Result 91 states and 110 transitions. Complement of second has 15 states. [2019-12-07 11:46:58,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2019-12-07 11:46:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 11:46:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 55 transitions. [2019-12-07 11:46:58,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 55 transitions. Stem has 50 letters. Loop has 2 letters. [2019-12-07 11:46:58,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:58,288 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:46:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:58,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 11:46:58,327 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:46:58,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:46:58,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:46:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:46:58,458 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.10 stem predicates 2 loop predicates [2019-12-07 11:46:58,458 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-12-07 11:46:58,588 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14. Second operand 12 states. Result 107 states and 133 transitions. Complement of second has 15 states. [2019-12-07 11:46:58,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2019-12-07 11:46:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 11:46:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 58 transitions. [2019-12-07 11:46:58,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 58 transitions. Stem has 50 letters. Loop has 2 letters. [2019-12-07 11:46:58,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:58,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 58 transitions. Stem has 52 letters. Loop has 2 letters. [2019-12-07 11:46:58,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:58,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 58 transitions. Stem has 50 letters. Loop has 4 letters. [2019-12-07 11:46:58,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:46:58,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 133 transitions. [2019-12-07 11:46:58,590 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2019-12-07 11:46:58,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 105 states and 129 transitions. [2019-12-07 11:46:58,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2019-12-07 11:46:58,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2019-12-07 11:46:58,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 129 transitions. [2019-12-07 11:46:58,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:46:58,592 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 129 transitions. [2019-12-07 11:46:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 129 transitions. [2019-12-07 11:46:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2019-12-07 11:46:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 11:46:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2019-12-07 11:46:58,594 INFO L711 BuchiCegarLoop]: Abstraction has 73 states and 85 transitions. [2019-12-07 11:46:58,594 INFO L591 BuchiCegarLoop]: Abstraction has 73 states and 85 transitions. [2019-12-07 11:46:58,594 INFO L424 BuchiCegarLoop]: ======== Iteration 19============ [2019-12-07 11:46:58,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 85 transitions. [2019-12-07 11:46:58,607 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 11:46:58,607 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:46:58,607 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:46:58,607 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:46:58,607 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:46:58,608 INFO L794 eck$LassoCheckResult]: Stem: 4354#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4348#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 4325#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4326#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4327#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4328#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4373#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4371#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4369#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4367#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4365#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4361#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4360#L19-3 assume !(main_~i~0 < 5); 4323#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 4324#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 4346#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4347#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4353#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4374#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4372#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4370#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4368#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4366#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4364#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4363#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4362#L23-3 assume !(main_~i~0 < 5); 4344#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 4345#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 4357#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4331#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4332#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4381#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4358#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4359#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4375#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4376#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 4355#L28-4 main_~nc_B~0 := 0; 4356#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4383#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4384#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4351#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4352#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4395#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4394#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4393#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 4333#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 4334#L41-2 [2019-12-07 11:46:58,608 INFO L796 eck$LassoCheckResult]: Loop: 4334#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4338#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 4334#L41-2 [2019-12-07 11:46:58,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:58,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1972313288, now seen corresponding path program 2 times [2019-12-07 11:46:58,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:58,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142343459] [2019-12-07 11:46:58,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:58,630 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:58,630 INFO L82 PathProgramCache]: Analyzing trace with hash 3558, now seen corresponding path program 1 times [2019-12-07 11:46:58,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:58,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126669783] [2019-12-07 11:46:58,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:58,633 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:46:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:46:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1312494829, now seen corresponding path program 7 times [2019-12-07 11:46:58,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:46:58,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94161472] [2019-12-07 11:46:58,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:46:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:46:58,655 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:06,828 WARN L192 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 313 DAG size of output: 235 [2019-12-07 11:47:07,146 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-12-07 11:47:07,149 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:47:07,149 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:47:07,149 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:47:07,149 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:47:07,149 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:47:07,149 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:07,149 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:47:07,150 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:47:07,150 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration19_Lasso [2019-12-07 11:47:07,150 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:47:07,150 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:47:07,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:07,993 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:47:07,993 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:07,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:07,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:07,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:07,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:07,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:07,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:07,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:07,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:07,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,002 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 [2019-12-07 11:47:08,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,003 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:08,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,004 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:08,004 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:08,005 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:08,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:08,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:08,013 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,016 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,018 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,018 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,020 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:08,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:08,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:08,027 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:08,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:08,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:08,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,037 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 [2019-12-07 11:47:08,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:08,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:08,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:08,040 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:08,043 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,047 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,053 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,053 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,056 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,062 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,062 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,068 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,070 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,073 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,077 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,079 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,079 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,088 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,095 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 [2019-12-07 11:47:08,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,096 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:47:08,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,097 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:47:08,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,106 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,109 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:08,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:08,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:08,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:08,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:08,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:08,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:08,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:47:08,163 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-12-07 11:47:08,163 INFO L444 ModelExtractionUtils]: 1 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:08,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:47:08,174 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:47:08,174 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:47:08,174 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nc_A~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~nc_A~0 Supporting invariants [] [2019-12-07 11:47:08,302 INFO L297 tatePredicateManager]: 42 out of 43 supporting invariants were superfluous and have been removed [2019-12-07 11:47:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:08,335 INFO L264 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:47:08,335 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:08,340 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 11:47:08,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:47:08,348 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 [2019-12-07 11:47:08,348 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 85 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-12-07 11:47:08,370 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 85 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 102 states and 124 transitions. Complement of second has 6 states. [2019-12-07 11:47:08,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2019-12-07 11:47:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:47:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2019-12-07 11:47:08,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 46 letters. Loop has 2 letters. [2019-12-07 11:47:08,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:08,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 48 letters. Loop has 2 letters. [2019-12-07 11:47:08,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:08,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 46 letters. Loop has 4 letters. [2019-12-07 11:47:08,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:08,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 124 transitions. [2019-12-07 11:47:08,372 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 11:47:08,372 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 95 states and 115 transitions. [2019-12-07 11:47:08,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-12-07 11:47:08,373 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-12-07 11:47:08,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 115 transitions. [2019-12-07 11:47:08,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:47:08,373 INFO L688 BuchiCegarLoop]: Abstraction has 95 states and 115 transitions. [2019-12-07 11:47:08,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 115 transitions. [2019-12-07 11:47:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2019-12-07 11:47:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-12-07 11:47:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2019-12-07 11:47:08,374 INFO L711 BuchiCegarLoop]: Abstraction has 81 states and 97 transitions. [2019-12-07 11:47:08,374 INFO L591 BuchiCegarLoop]: Abstraction has 81 states and 97 transitions. [2019-12-07 11:47:08,374 INFO L424 BuchiCegarLoop]: ======== Iteration 20============ [2019-12-07 11:47:08,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states and 97 transitions. [2019-12-07 11:47:08,375 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 11:47:08,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:47:08,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:47:08,375 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:47:08,375 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:47:08,375 INFO L794 eck$LassoCheckResult]: Stem: 4874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4872#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 4847#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4848#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4849#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4850#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4890#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4888#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4886#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4884#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4882#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4878#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4877#L19-3 assume !(main_~i~0 < 5); 4845#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 4846#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 4868#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4869#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4873#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4891#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4889#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4887#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4885#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4883#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4881#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4880#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4879#L23-3 assume !(main_~i~0 < 5); 4864#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 4865#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 4875#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4853#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4854#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4876#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4896#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4897#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4919#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4918#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 4917#L28-4 main_~nc_B~0 := 0; 4916#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4915#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4914#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4913#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4912#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4911#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4910#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4909#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 4855#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 4856#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4858#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 4925#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4866#L41 [2019-12-07 11:47:08,376 INFO L796 eck$LassoCheckResult]: Loop: 4866#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 4867#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4866#L41 [2019-12-07 11:47:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:08,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2032634054, now seen corresponding path program 2 times [2019-12-07 11:47:08,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:08,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83298816] [2019-12-07 11:47:08,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:08,396 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash 3708, now seen corresponding path program 2 times [2019-12-07 11:47:08,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:08,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669375489] [2019-12-07 11:47:08,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:08,399 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:08,400 INFO L82 PathProgramCache]: Analyzing trace with hash -848791039, now seen corresponding path program 6 times [2019-12-07 11:47:08,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:08,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307211858] [2019-12-07 11:47:08,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:08,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:15,437 WARN L192 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 352 DAG size of output: 258 [2019-12-07 11:47:15,678 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:47:15,681 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:47:15,681 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:47:15,681 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:47:15,681 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:47:15,681 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:47:15,682 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:15,692 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:47:15,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:47:15,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration20_Lasso [2019-12-07 11:47:15,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:47:15,693 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:47:15,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:15,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:16,609 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2019-12-07 11:47:16,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:16,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:17,239 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-12-07 11:47:17,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:47:17,312 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,325 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,331 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,360 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,362 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,362 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,364 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,369 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:17,369 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:17,372 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,378 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,384 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,390 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,395 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:17,395 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:17,397 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,400 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,402 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,402 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,403 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:17,416 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:17,418 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:17,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:17,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:17,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,429 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:47:17,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,430 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:47:17,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:17,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:17,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:17,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:17,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:17,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:17,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:17,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:17,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:17,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:47:17,497 INFO L443 ModelExtractionUtils]: Simplification made 26 calls to the SMT solver. [2019-12-07 11:47:17,497 INFO L444 ModelExtractionUtils]: 0 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 156 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:17,500 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:47:17,501 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:47:17,501 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:47:17,501 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~j~0 - 2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2019-12-07 11:47:17,726 INFO L297 tatePredicateManager]: 57 out of 58 supporting invariants were superfluous and have been removed [2019-12-07 11:47:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:17,762 INFO L264 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 11:47:17,762 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:17,852 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 11:47:17,852 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:47:17,873 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 2 loop predicates [2019-12-07 11:47:17,873 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 97 transitions. cyclomatic complexity: 25 Second operand 7 states. [2019-12-07 11:47:17,940 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 97 transitions. cyclomatic complexity: 25. Second operand 7 states. Result 140 states and 179 transitions. Complement of second has 12 states. [2019-12-07 11:47:17,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2019-12-07 11:47:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 11:47:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2019-12-07 11:47:17,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 49 letters. Loop has 2 letters. [2019-12-07 11:47:17,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:17,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 51 letters. Loop has 2 letters. [2019-12-07 11:47:17,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:17,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 49 letters. Loop has 4 letters. [2019-12-07 11:47:17,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:17,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 140 states and 179 transitions. [2019-12-07 11:47:17,943 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 11:47:17,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 140 states to 106 states and 129 transitions. [2019-12-07 11:47:17,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 11:47:17,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-12-07 11:47:17,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 129 transitions. [2019-12-07 11:47:17,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:47:17,945 INFO L688 BuchiCegarLoop]: Abstraction has 106 states and 129 transitions. [2019-12-07 11:47:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 129 transitions. [2019-12-07 11:47:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2019-12-07 11:47:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-12-07 11:47:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2019-12-07 11:47:17,947 INFO L711 BuchiCegarLoop]: Abstraction has 98 states and 120 transitions. [2019-12-07 11:47:17,948 INFO L591 BuchiCegarLoop]: Abstraction has 98 states and 120 transitions. [2019-12-07 11:47:17,948 INFO L424 BuchiCegarLoop]: ======== Iteration 21============ [2019-12-07 11:47:17,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 120 transitions. [2019-12-07 11:47:17,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 11:47:17,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:47:17,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:47:17,949 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:47:17,949 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:47:17,949 INFO L794 eck$LassoCheckResult]: Stem: 5527#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 5525#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 5498#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5499#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5500#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5501#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5547#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5545#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5543#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5541#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5539#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5535#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5534#L19-3 assume !(main_~i~0 < 5); 5496#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 5497#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 5520#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5521#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5526#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5548#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5546#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5544#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5542#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5540#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5538#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5537#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5536#L23-3 assume !(main_~i~0 < 5); 5515#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 5516#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 5530#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5531#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5553#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5554#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5532#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5533#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5551#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5552#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 5528#L28-4 main_~nc_B~0 := 0; 5529#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5557#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5513#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5514#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5524#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5556#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5555#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5550#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5549#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5522#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 5523#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 5570#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5569#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5567#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5566#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5565#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5563#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5564#L41-2 [2019-12-07 11:47:17,949 INFO L796 eck$LassoCheckResult]: Loop: 5564#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5577#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5564#L41-2 [2019-12-07 11:47:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:17,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1046009104, now seen corresponding path program 7 times [2019-12-07 11:47:17,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:17,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926480918] [2019-12-07 11:47:17,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:17,981 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:17,981 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 10 times [2019-12-07 11:47:17,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:17,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979360322] [2019-12-07 11:47:17,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:17,985 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash -192399085, now seen corresponding path program 8 times [2019-12-07 11:47:17,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:17,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635068073] [2019-12-07 11:47:17,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-12-07 11:47:18,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635068073] [2019-12-07 11:47:18,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542912305] [2019-12-07 11:47:18,050 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/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 [2019-12-07 11:47:18,099 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:47:18,099 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:47:18,100 INFO L264 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 11:47:18,101 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-12-07 11:47:18,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:47:18,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-12-07 11:47:18,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782930518] [2019-12-07 11:47:18,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:47:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 11:47:18,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-12-07 11:47:18,179 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. cyclomatic complexity: 36 Second operand 15 states. [2019-12-07 11:47:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:47:18,318 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2019-12-07 11:47:18,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 11:47:18,319 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 130 transitions. [2019-12-07 11:47:18,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:47:18,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 64 states and 74 transitions. [2019-12-07 11:47:18,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-12-07 11:47:18,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-12-07 11:47:18,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 74 transitions. [2019-12-07 11:47:18,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:47:18,320 INFO L688 BuchiCegarLoop]: Abstraction has 64 states and 74 transitions. [2019-12-07 11:47:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 74 transitions. [2019-12-07 11:47:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2019-12-07 11:47:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-12-07 11:47:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2019-12-07 11:47:18,321 INFO L711 BuchiCegarLoop]: Abstraction has 63 states and 73 transitions. [2019-12-07 11:47:18,321 INFO L591 BuchiCegarLoop]: Abstraction has 63 states and 73 transitions. [2019-12-07 11:47:18,321 INFO L424 BuchiCegarLoop]: ======== Iteration 22============ [2019-12-07 11:47:18,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 73 transitions. [2019-12-07 11:47:18,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:47:18,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:47:18,322 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:47:18,322 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:47:18,322 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:47:18,322 INFO L794 eck$LassoCheckResult]: Stem: 5930#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 5926#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 5903#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5904#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5905#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5906#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5944#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5941#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5940#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5939#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5938#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5935#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5934#L19-3 assume !(main_~i~0 < 5); 5901#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 5902#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 5928#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5929#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5924#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5925#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5954#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5953#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5952#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5951#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5949#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5947#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5946#L23-3 assume !(main_~i~0 < 5); 5921#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 5922#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 5931#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5932#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5933#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5909#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5910#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5950#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5948#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5937#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5936#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5907#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 5908#L28-4 main_~nc_B~0 := 0; 5917#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5918#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5919#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5920#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5945#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5943#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5942#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5927#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 5911#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 5912#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5962#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5961#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5923#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5913#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5914#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5956#L41-2 [2019-12-07 11:47:18,322 INFO L796 eck$LassoCheckResult]: Loop: 5956#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5958#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5956#L41-2 [2019-12-07 11:47:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:18,322 INFO L82 PathProgramCache]: Analyzing trace with hash 750753690, now seen corresponding path program 9 times [2019-12-07 11:47:18,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:18,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203187428] [2019-12-07 11:47:18,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-07 11:47:18,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203187428] [2019-12-07 11:47:18,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402063752] [2019-12-07 11:47:18,406 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:47:18,454 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 11:47:18,455 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:47:18,456 INFO L264 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 11:47:18,456 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-07 11:47:18,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:47:18,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2019-12-07 11:47:18,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770908299] [2019-12-07 11:47:18,524 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:47:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:18,524 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 11 times [2019-12-07 11:47:18,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:18,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110205761] [2019-12-07 11:47:18,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,527 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:18,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:47:18,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 11:47:18,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2019-12-07 11:47:18,562 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. cyclomatic complexity: 17 Second operand 21 states. [2019-12-07 11:47:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:47:18,673 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2019-12-07 11:47:18,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 11:47:18,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 79 transitions. [2019-12-07 11:47:18,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:47:18,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 67 states and 77 transitions. [2019-12-07 11:47:18,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-12-07 11:47:18,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-12-07 11:47:18,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 77 transitions. [2019-12-07 11:47:18,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:47:18,675 INFO L688 BuchiCegarLoop]: Abstraction has 67 states and 77 transitions. [2019-12-07 11:47:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 77 transitions. [2019-12-07 11:47:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2019-12-07 11:47:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 11:47:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-12-07 11:47:18,676 INFO L711 BuchiCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-12-07 11:47:18,676 INFO L591 BuchiCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-12-07 11:47:18,676 INFO L424 BuchiCegarLoop]: ======== Iteration 23============ [2019-12-07 11:47:18,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 75 transitions. [2019-12-07 11:47:18,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:47:18,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:47:18,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:47:18,678 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:47:18,678 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:47:18,678 INFO L794 eck$LassoCheckResult]: Stem: 6250#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6247#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 6224#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6225#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6226#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6227#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6263#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6260#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6259#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6258#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6257#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6254#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6253#L19-3 assume !(main_~i~0 < 5); 6222#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 6223#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 6245#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6246#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6249#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6271#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6270#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6269#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6268#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6267#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6266#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6265#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6264#L23-3 assume !(main_~i~0 < 5); 6242#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 6243#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 6251#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6230#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6231#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6252#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6277#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6275#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6273#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6256#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6255#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6228#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 6229#L28-4 main_~nc_B~0 := 0; 6238#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6239#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6240#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6241#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6276#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6274#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6272#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6262#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6261#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6248#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 6232#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 6233#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6283#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 6282#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6244#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 6234#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6235#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 6279#L41-2 [2019-12-07 11:47:18,678 INFO L796 eck$LassoCheckResult]: Loop: 6279#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6281#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 6279#L41-2 [2019-12-07 11:47:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash 733222869, now seen corresponding path program 10 times [2019-12-07 11:47:18,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:18,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854432236] [2019-12-07 11:47:18,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 12 times [2019-12-07 11:47:18,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:18,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16941948] [2019-12-07 11:47:18,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,716 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 252543160, now seen corresponding path program 11 times [2019-12-07 11:47:18,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:18,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48596507] [2019-12-07 11:47:18,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:18,740 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:24,588 WARN L192 SmtUtils]: Spent 5.81 s on a formula simplification. DAG size of input: 409 DAG size of output: 297 [2019-12-07 11:47:25,065 WARN L192 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-12-07 11:47:25,068 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:47:25,068 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:47:25,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:47:25,068 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:47:25,068 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:47:25,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:25,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:47:25,069 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:47:25,069 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration23_Lasso [2019-12-07 11:47:25,069 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:47:25,069 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:47:25,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,622 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2019-12-07 11:47:25,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:25,850 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:47:28,633 WARN L192 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-12-07 11:47:28,774 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:47:28,774 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 159 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,788 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 160 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,805 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 161 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,811 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,815 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 162 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,819 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 163 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 164 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,834 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:28,834 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:28,836 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 165 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,839 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 166 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,846 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,847 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,847 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,848 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 167 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,853 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:28,853 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:28,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 168 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,859 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:28,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:28,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:28,862 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 169 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:28,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:28,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:28,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:28,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:28,870 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:28,870 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:28,883 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:47:28,906 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-12-07 11:47:28,906 INFO L444 ModelExtractionUtils]: 5 out of 28 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 170 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:28,908 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:47:28,910 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:47:28,910 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:47:28,910 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nc_A~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nc_A~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 11:47:29,005 INFO L297 tatePredicateManager]: 28 out of 28 supporting invariants were superfluous and have been removed [2019-12-07 11:47:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:29,036 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:47:29,037 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:29,041 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:47:29,041 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:47:29,047 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 [2019-12-07 11:47:29,047 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-12-07 11:47:29,054 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 73 states and 87 transitions. Complement of second has 5 states. [2019-12-07 11:47:29,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:47:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:47:29,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2019-12-07 11:47:29,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 56 letters. Loop has 2 letters. [2019-12-07 11:47:29,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:29,054 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:47:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:29,084 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:47:29,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:29,089 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:47:29,089 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:47:29,095 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 11:47:29,095 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-12-07 11:47:29,101 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 73 states and 87 transitions. Complement of second has 5 states. [2019-12-07 11:47:29,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:47:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:47:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2019-12-07 11:47:29,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 56 letters. Loop has 2 letters. [2019-12-07 11:47:29,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:29,102 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:47:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:29,130 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:47:29,131 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:29,135 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:47:29,135 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:47:29,141 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 11:47:29,141 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-12-07 11:47:29,148 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 76 states and 91 transitions. Complement of second has 4 states. [2019-12-07 11:47:29,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 11:47:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:47:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2019-12-07 11:47:29,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 26 transitions. Stem has 56 letters. Loop has 2 letters. [2019-12-07 11:47:29,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:29,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 26 transitions. Stem has 58 letters. Loop has 2 letters. [2019-12-07 11:47:29,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:29,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 26 transitions. Stem has 56 letters. Loop has 4 letters. [2019-12-07 11:47:29,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:29,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 91 transitions. [2019-12-07 11:47:29,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:47:29,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 71 states and 83 transitions. [2019-12-07 11:47:29,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-12-07 11:47:29,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-12-07 11:47:29,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 83 transitions. [2019-12-07 11:47:29,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:47:29,150 INFO L688 BuchiCegarLoop]: Abstraction has 71 states and 83 transitions. [2019-12-07 11:47:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 83 transitions. [2019-12-07 11:47:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2019-12-07 11:47:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-07 11:47:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2019-12-07 11:47:29,152 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 68 transitions. [2019-12-07 11:47:29,152 INFO L591 BuchiCegarLoop]: Abstraction has 60 states and 68 transitions. [2019-12-07 11:47:29,152 INFO L424 BuchiCegarLoop]: ======== Iteration 24============ [2019-12-07 11:47:29,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 68 transitions. [2019-12-07 11:47:29,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:47:29,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:47:29,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:47:29,153 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:47:29,153 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:47:29,153 INFO L794 eck$LassoCheckResult]: Stem: 7202#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7199#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 7177#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7178#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7179#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7180#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7216#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7214#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7212#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7210#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7209#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7206#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7205#L19-3 assume !(main_~i~0 < 5); 7175#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 7176#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 7197#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7198#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7201#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7229#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7228#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7227#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7226#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7225#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7224#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7223#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7222#L23-3 assume !(main_~i~0 < 5); 7195#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 7196#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 7203#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7183#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7184#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7204#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7215#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7213#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7211#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7208#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7207#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7181#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 7182#L28-4 main_~nc_B~0 := 0; 7191#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7192#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7193#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7194#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7221#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7220#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7219#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7218#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7217#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7200#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 7185#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 7186#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7188#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 7190#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7189#L41 [2019-12-07 11:47:29,153 INFO L796 eck$LassoCheckResult]: Loop: 7189#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 7187#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7189#L41 [2019-12-07 11:47:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash -946162842, now seen corresponding path program 3 times [2019-12-07 11:47:29,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:29,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560081695] [2019-12-07 11:47:29,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:29,180 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash 3708, now seen corresponding path program 3 times [2019-12-07 11:47:29,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:29,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462965772] [2019-12-07 11:47:29,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:29,183 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:29,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1270578337, now seen corresponding path program 12 times [2019-12-07 11:47:29,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:29,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715688132] [2019-12-07 11:47:29,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:29,205 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:34,159 WARN L192 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 376 DAG size of output: 272 [2019-12-07 11:47:34,569 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:47:34,572 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:47:34,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:47:34,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:47:34,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:47:34,573 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:47:34,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:34,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:47:34,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:47:34,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration24_Lasso [2019-12-07 11:47:34,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:47:34,573 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:47:34,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:34,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:35,241 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2019-12-07 11:47:35,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:35,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:35,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:35,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:47:35,652 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-12-07 11:47:35,727 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:47:35,727 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,730 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,732 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 172 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,737 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,737 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 173 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 174 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,749 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,751 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 175 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,757 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 176 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,762 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,763 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 177 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,767 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,769 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 178 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,773 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,775 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,775 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 179 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,780 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,781 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,783 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 180 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,788 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,790 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 181 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,797 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 182 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,800 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:47:35,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:47:35,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:47:35,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 183 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,807 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,809 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,809 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,811 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 184 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,814 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,815 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:47:35,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,816 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:47:35,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,819 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 185 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,824 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,824 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,826 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 186 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,830 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,832 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 187 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,837 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,838 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:47:35,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,839 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:47:35,839 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 188 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,851 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 189 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,859 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:47:35,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,860 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:47:35,860 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 190 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,869 INFO L203 nArgumentSynthesizer]: 8 stem disjuncts [2019-12-07 11:47:35,869 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 11:47:35,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,891 INFO L401 nArgumentSynthesizer]: We have 44 Motzkin's Theorem applications. [2019-12-07 11:47:35,891 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-12-07 11:47:35,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 191 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,942 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 11:47:35,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,943 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 11:47:35,943 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 192 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,949 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 [2019-12-07 11:47:35,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,951 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,951 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 193 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,957 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,959 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,959 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,962 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 194 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,965 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:47:35,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,968 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,968 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 195 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:35,975 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 [2019-12-07 11:47:35,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:47:35,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:47:35,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:47:35,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:47:35,980 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:47:35,980 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:47:35,994 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:47:36,021 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2019-12-07 11:47:36,021 INFO L444 ModelExtractionUtils]: 4 out of 28 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 196 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:47:36,024 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:47:36,026 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:47:36,026 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:47:36,026 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~i~0 + 2*ULTIMATE.start_main_~j~0 + 5 Supporting invariants [] [2019-12-07 11:47:36,214 INFO L297 tatePredicateManager]: 48 out of 50 supporting invariants were superfluous and have been removed [2019-12-07 11:47:36,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:36,254 INFO L264 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 11:47:36,255 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:36,323 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:47:36,323 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:47:36,341 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.7 stem predicates 2 loop predicates [2019-12-07 11:47:36,341 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 68 transitions. cyclomatic complexity: 13 Second operand 9 states. [2019-12-07 11:47:36,452 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 68 transitions. cyclomatic complexity: 13. Second operand 9 states. Result 103 states and 125 transitions. Complement of second has 14 states. [2019-12-07 11:47:36,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 7 stem states 2 non-accepting loop states 2 accepting loop states [2019-12-07 11:47:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 11:47:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 44 transitions. [2019-12-07 11:47:36,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 44 transitions. Stem has 53 letters. Loop has 2 letters. [2019-12-07 11:47:36,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:36,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 44 transitions. Stem has 55 letters. Loop has 2 letters. [2019-12-07 11:47:36,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:36,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 44 transitions. Stem has 53 letters. Loop has 4 letters. [2019-12-07 11:47:36,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:47:36,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 125 transitions. [2019-12-07 11:47:36,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:47:36,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 64 states and 72 transitions. [2019-12-07 11:47:36,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 11:47:36,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 11:47:36,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 72 transitions. [2019-12-07 11:47:36,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:47:36,455 INFO L688 BuchiCegarLoop]: Abstraction has 64 states and 72 transitions. [2019-12-07 11:47:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 72 transitions. [2019-12-07 11:47:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-12-07 11:47:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 11:47:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2019-12-07 11:47:36,456 INFO L711 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-12-07 11:47:36,456 INFO L591 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-12-07 11:47:36,456 INFO L424 BuchiCegarLoop]: ======== Iteration 25============ [2019-12-07 11:47:36,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 70 transitions. [2019-12-07 11:47:36,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:47:36,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:47:36,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:47:36,457 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:47:36,457 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:47:36,457 INFO L794 eck$LassoCheckResult]: Stem: 7782#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7780#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 7757#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7758#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7759#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7760#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7796#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7794#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7793#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7790#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7789#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7786#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7785#L19-3 assume !(main_~i~0 < 5); 7755#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 7756#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 7777#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7778#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7781#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7811#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7810#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7808#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7806#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7805#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7802#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7800#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7799#L23-3 assume !(main_~i~0 < 5); 7775#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 7776#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 7783#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7763#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7764#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7784#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7816#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7815#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7814#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7813#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7812#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7788#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7787#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7761#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 7762#L28-4 main_~nc_B~0 := 0; 7771#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7772#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7773#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7774#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7798#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7797#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7795#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7792#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7791#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7779#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 7765#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 7766#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7768#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem11;havoc main_#t~mem12;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 7770#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7769#L41 [2019-12-07 11:47:36,457 INFO L796 eck$LassoCheckResult]: Loop: 7769#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem11;havoc main_#t~mem12;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 7767#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7769#L41 [2019-12-07 11:47:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:36,457 INFO L82 PathProgramCache]: Analyzing trace with hash 496764641, now seen corresponding path program 4 times [2019-12-07 11:47:36,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:36,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996208195] [2019-12-07 11:47:36,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:47:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 42 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-07 11:47:36,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996208195] [2019-12-07 11:47:36,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912282881] [2019-12-07 11:47:36,604 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85d6c8a3-ef45-47a9-a5f3-fd940ffa3878/bin/uautomizer/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:47:36,644 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:47:36,644 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:47:36,645 INFO L264 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 11:47:36,646 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:47:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-12-07 11:47:36,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:47:36,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2019-12-07 11:47:36,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512376890] [2019-12-07 11:47:36,773 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:47:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:47:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash 3708, now seen corresponding path program 4 times [2019-12-07 11:47:36,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:47:36,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646415804] [2019-12-07 11:47:36,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:47:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:47:36,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:47:36,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:47:36,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-12-07 11:47:36,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2019-12-07 11:47:36,816 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. cyclomatic complexity: 13 Second operand 27 states. [2019-12-07 11:47:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:47:37,245 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-12-07 11:47:37,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 11:47:37,245 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 58 transitions. [2019-12-07 11:47:37,245 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:47:37,246 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 0 states and 0 transitions. [2019-12-07 11:47:37,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:47:37,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:47:37,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:47:37,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:47:37,246 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:47:37,246 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:47:37,246 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:47:37,246 INFO L424 BuchiCegarLoop]: ======== Iteration 26============ [2019-12-07 11:47:37,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:47:37,246 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:47:37,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 11:47:37,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:47:37 BoogieIcfgContainer [2019-12-07 11:47:37,250 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:47:37,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:47:37,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:47:37,251 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:47:37,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:46:32" (3/4) ... [2019-12-07 11:47:37,253 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:47:37,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:47:37,254 INFO L168 Benchmark]: Toolchain (without parser) took 65421.56 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 265.3 MB). Free memory was 946.2 MB in the beginning and 1.2 GB in the end (delta: -205.4 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:47:37,254 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:47:37,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:47:37,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:47:37,255 INFO L168 Benchmark]: Boogie Preprocessor took 19.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:47:37,255 INFO L168 Benchmark]: RCFGBuilder took 216.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:47:37,255 INFO L168 Benchmark]: BuchiAutomizer took 64957.80 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 173.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -92.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:47:37,255 INFO L168 Benchmark]: Witness Printer took 2.67 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:47:37,256 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 216.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 64957.80 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 173.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -92.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.67 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 25 terminating modules (15 trivial, 8 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 9 * unknown-#length-unknown[string_A] + -2 * i and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[string_A] + -1 * string_A + -1 * nc_A and consists of 3 locations. One deterministic module has affine ranking function -1 * string_B + -1 * nc_B + unknown-#length-unknown[string_B] and consists of 3 locations. One deterministic module has affine ranking function -1 * j + nc_B and consists of 3 locations. One deterministic module has affine ranking function nc_A + -1 * i and consists of 3 locations. One deterministic module has affine ranking function -1 * i + nc_A and consists of 4 locations. One deterministic module has affine ranking function 2 * j + -2 * i + 3 and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 2 * j + 5 and consists of 11 locations. One nondeterministic module has affine ranking function -2 * i + 5 and consists of 13 locations. One nondeterministic module has affine ranking function nc_A + -1 * i and consists of 3 locations. 15 modules have a trivial ranking function, the largest among these consists of 27 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 64.9s and 26 iterations. TraceHistogramMax:6. Analysis of lassos took 61.6s. Construction of modules took 0.9s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 8. Minimization of nondet autom 17. Automata minimization 0.0s AutomataMinimizationTime, 24 MinimizatonAttempts, 117 StatesRemovedByMinimization, 19 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 98 states and ocurred in iteration 20. Nontrivial modules had stage [8, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 474 SDtfs, 971 SDslu, 945 SDs, 0 SdLazy, 1833 SolverSat, 361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc6 concLT0 SILN0 SILU9 SILI0 SILT0 lasso10 LassoPreprocessingBenchmarks: Lassos: inital334 mio100 ax100 hnf99 lsp96 ukn46 mio100 lsp56 div100 bol100 ite100 ukn100 eq171 hnf85 smp93 dnf502 smp86 tf100 neg95 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 85ms VariablesStem: 7 VariablesLoop: 2 DisjunctsStem: 36 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 76 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...