./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/reducercommutativity/max05_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/reducercommutativity/max05_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/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 d02fdead04c3e6f93d11e2edd6641f56f1584022 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 19:00:02,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 19:00:02,403 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 19:00:02,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 19:00:02,412 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 19:00:02,413 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 19:00:02,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 19:00:02,415 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 19:00:02,416 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 19:00:02,416 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 19:00:02,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 19:00:02,417 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 19:00:02,418 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 19:00:02,419 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 19:00:02,419 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 19:00:02,420 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 19:00:02,420 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 19:00:02,422 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 19:00:02,423 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 19:00:02,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 19:00:02,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 19:00:02,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 19:00:02,427 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 19:00:02,428 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 19:00:02,428 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 19:00:02,428 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 19:00:02,429 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 19:00:02,430 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 19:00:02,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 19:00:02,431 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 19:00:02,431 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 19:00:02,432 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 19:00:02,432 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 19:00:02,432 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 19:00:02,433 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 19:00:02,433 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 19:00:02,433 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-01 19:00:02,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 19:00:02,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 19:00:02,446 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 19:00:02,446 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 19:00:02,446 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 19:00:02,446 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 19:00:02,446 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 19:00:02,447 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 19:00:02,447 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 19:00:02,448 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 19:00:02,449 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 19:00:02,449 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 19:00:02,449 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 19:00:02,449 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 19:00:02,449 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 19:00:02,449 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 19:00:02,449 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 19:00:02,449 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 19:00:02,450 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 19:00:02,450 INFO L133 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/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/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 -> d02fdead04c3e6f93d11e2edd6641f56f1584022 [2018-12-01 19:00:02,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 19:00:02,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 19:00:02,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 19:00:02,480 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 19:00:02,480 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 19:00:02,481 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/../../sv-benchmarks/c/reducercommutativity/max05_true-unreach-call_true-termination.i [2018-12-01 19:00:02,514 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/data/f6eae3b98/a1da48d9b7c64ca983ec101d8f3821dc/FLAG8b21dd33f [2018-12-01 19:00:02,995 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 19:00:02,995 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/sv-benchmarks/c/reducercommutativity/max05_true-unreach-call_true-termination.i [2018-12-01 19:00:02,999 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/data/f6eae3b98/a1da48d9b7c64ca983ec101d8f3821dc/FLAG8b21dd33f [2018-12-01 19:00:03,007 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/data/f6eae3b98/a1da48d9b7c64ca983ec101d8f3821dc [2018-12-01 19:00:03,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 19:00:03,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 19:00:03,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 19:00:03,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 19:00:03,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 19:00:03,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caf47c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03, skipping insertion in model container [2018-12-01 19:00:03,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 19:00:03,027 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 19:00:03,116 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 19:00:03,122 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 19:00:03,134 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 19:00:03,142 INFO L195 MainTranslator]: Completed translation [2018-12-01 19:00:03,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03 WrapperNode [2018-12-01 19:00:03,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 19:00:03,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 19:00:03,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 19:00:03,143 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 19:00:03,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 19:00:03,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 19:00:03,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 19:00:03,194 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 19:00:03,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... [2018-12-01 19:00:03,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 19:00:03,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 19:00:03,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 19:00:03,216 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 19:00:03,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/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 [2018-12-01 19:00:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 19:00:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 19:00:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 19:00:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 19:00:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 19:00:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 19:00:03,415 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 19:00:03,416 INFO L280 CfgBuilder]: Removed 15 assue(true) statements. [2018-12-01 19:00:03,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:00:03 BoogieIcfgContainer [2018-12-01 19:00:03,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 19:00:03,417 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 19:00:03,417 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 19:00:03,419 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 19:00:03,420 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 19:00:03,420 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 07:00:03" (1/3) ... [2018-12-01 19:00:03,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@522fdd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 07:00:03, skipping insertion in model container [2018-12-01 19:00:03,421 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 19:00:03,421 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:00:03" (2/3) ... [2018-12-01 19:00:03,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@522fdd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 07:00:03, skipping insertion in model container [2018-12-01 19:00:03,421 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 19:00:03,421 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:00:03" (3/3) ... [2018-12-01 19:00:03,423 INFO L375 chiAutomizerObserver]: Analyzing ICFG max05_true-unreach-call_true-termination.i [2018-12-01 19:00:03,458 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 19:00:03,458 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 19:00:03,458 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 19:00:03,458 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 19:00:03,458 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 19:00:03,458 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 19:00:03,459 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 19:00:03,459 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 19:00:03,459 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 19:00:03,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states. [2018-12-01 19:00:03,481 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 16 [2018-12-01 19:00:03,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:03,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:03,485 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-01 19:00:03,485 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 19:00:03,485 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 19:00:03,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states. [2018-12-01 19:00:03,486 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 16 [2018-12-01 19:00:03,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:03,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:03,487 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-01 19:00:03,487 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 19:00:03,491 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 7#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 30#L23-3true [2018-12-01 19:00:03,492 INFO L796 eck$LassoCheckResult]: Loop: 30#L23-3true assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 10#L23-2true main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 30#L23-3true [2018-12-01 19:00:03,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-12-01 19:00:03,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:03,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:03,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:03,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:03,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:03,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2018-12-01 19:00:03,555 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:03,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:03,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:03,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:03,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:03,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2018-12-01 19:00:03,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:03,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:03,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:03,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:03,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:03,675 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 19:00:03,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 19:00:03,676 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 19:00:03,676 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 19:00:03,676 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 19:00:03,676 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 19:00:03,676 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 19:00:03,676 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 19:00:03,676 INFO L131 ssoRankerPreferences]: Filename of dumped script: max05_true-unreach-call_true-termination.i_Iteration1_Lasso [2018-12-01 19:00:03,676 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 19:00:03,676 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 19:00:03,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:03,847 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 19:00:03,850 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 19:00:03,852 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,852 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,853 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,853 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,853 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,853 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,855 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,855 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,857 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,857 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,858 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,858 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,858 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,858 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,858 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,858 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,859 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,859 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,859 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,860 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,860 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,860 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,860 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,860 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,860 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,861 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,861 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,861 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,862 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,862 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,862 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,862 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,862 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,862 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,863 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,863 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,863 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,863 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,864 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,864 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,864 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,864 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,864 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,864 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,865 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,865 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,865 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,865 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,865 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,865 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,865 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,866 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,866 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,866 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,867 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,867 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,867 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,867 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,868 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:03,868 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:03,870 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,871 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,871 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,871 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,871 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,871 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,871 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,872 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,872 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,872 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,872 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,873 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,873 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,873 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,873 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,873 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,873 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,873 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,874 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,874 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,874 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,874 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,875 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,875 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,875 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,875 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,875 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,876 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,876 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,876 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,876 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-01 19:00:03,876 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,877 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,878 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-12-01 19:00:03,878 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:03,882 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,882 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,882 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,882 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,882 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,883 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,883 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,883 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,883 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,883 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,884 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,884 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,884 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,884 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,884 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,885 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:03,885 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:03,887 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,887 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,888 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,888 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,888 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,888 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,889 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:03,889 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:03,895 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,895 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,896 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,896 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:03,896 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,896 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,896 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,896 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:03,896 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:03,897 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:03,898 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:03,898 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:03,898 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:03,898 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:03,898 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:03,900 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:03,900 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:03,920 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 19:00:03,939 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-01 19:00:03,939 INFO L444 ModelExtractionUtils]: 6 out of 13 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-12-01 19:00:03,940 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 19:00:03,941 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-01 19:00:03,942 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 19:00:03,942 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, v_rep(select #length ULTIMATE.start_main_~#x~0.base)_1) = -8*ULTIMATE.start_main_~i~1 + 9*v_rep(select #length ULTIMATE.start_main_~#x~0.base)_1 Supporting invariants [] [2018-12-01 19:00:03,944 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2018-12-01 19:00:03,948 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-01 19:00:03,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:03,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:03,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,011 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 [2018-12-01 19:00:04,012 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states. Second operand 3 states. [2018-12-01 19:00:04,080 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states.. Second operand 3 states. Result 84 states and 119 transitions. Complement of second has 8 states. [2018-12-01 19:00:04,080 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 [2018-12-01 19:00:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 19:00:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2018-12-01 19:00:04,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 79 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-01 19:00:04,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:04,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 79 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-01 19:00:04,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:04,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 79 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-01 19:00:04,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:04,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 119 transitions. [2018-12-01 19:00:04,087 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 25 states and 33 transitions. [2018-12-01 19:00:04,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-12-01 19:00:04,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 19:00:04,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 33 transitions. [2018-12-01 19:00:04,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:04,091 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2018-12-01 19:00:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 33 transitions. [2018-12-01 19:00:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-12-01 19:00:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-01 19:00:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2018-12-01 19:00:04,108 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2018-12-01 19:00:04,108 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2018-12-01 19:00:04,108 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 19:00:04,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 33 transitions. [2018-12-01 19:00:04,109 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:04,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:04,109 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-01 19:00:04,110 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:04,110 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 178#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 175#L23-3 assume !(main_~i~1 < 5); 174#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 163#L9-3 [2018-12-01 19:00:04,110 INFO L796 eck$LassoCheckResult]: Loop: 163#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 164#L10 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 173#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 168#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 163#L9-3 [2018-12-01 19:00:04,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2018-12-01 19:00:04,110 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:04,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:00:04,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 19:00:04,133 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:04,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1665446, now seen corresponding path program 1 times [2018-12-01 19:00:04,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:04,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 19:00:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 19:00:04,177 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-12-01 19:00:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:04,185 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2018-12-01 19:00:04,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 19:00:04,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 33 transitions. [2018-12-01 19:00:04,187 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 33 transitions. [2018-12-01 19:00:04,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-01 19:00:04,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 19:00:04,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2018-12-01 19:00:04,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:04,188 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2018-12-01 19:00:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2018-12-01 19:00:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-12-01 19:00:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-01 19:00:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-12-01 19:00:04,189 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-12-01 19:00:04,189 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-12-01 19:00:04,190 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 19:00:04,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 32 transitions. [2018-12-01 19:00:04,190 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:04,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:04,191 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-01 19:00:04,191 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:04,191 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 235#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 232#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 233#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 234#L23-3 assume !(main_~i~1 < 5); 231#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 220#L9-3 [2018-12-01 19:00:04,191 INFO L796 eck$LassoCheckResult]: Loop: 220#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 221#L10 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 230#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 225#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 220#L9-3 [2018-12-01 19:00:04,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,191 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2018-12-01 19:00:04,191 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:04,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:04,204 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:04,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:04,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:04,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-01 19:00:04,239 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:04,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1665446, now seen corresponding path program 2 times [2018-12-01 19:00:04,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:04,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 19:00:04,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-01 19:00:04,280 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. cyclomatic complexity: 12 Second operand 5 states. [2018-12-01 19:00:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:04,290 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2018-12-01 19:00:04,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 19:00:04,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-01 19:00:04,291 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 35 transitions. [2018-12-01 19:00:04,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-01 19:00:04,292 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 19:00:04,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2018-12-01 19:00:04,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:04,292 INFO L705 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2018-12-01 19:00:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2018-12-01 19:00:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-12-01 19:00:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-01 19:00:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2018-12-01 19:00:04,293 INFO L728 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2018-12-01 19:00:04,293 INFO L608 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2018-12-01 19:00:04,293 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 19:00:04,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2018-12-01 19:00:04,294 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:04,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:04,294 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-12-01 19:00:04,294 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:04,294 INFO L794 eck$LassoCheckResult]: Stem: 313#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 312#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 308#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 309#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 310#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 311#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 318#L23-3 assume !(main_~i~1 < 5); 307#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 296#L9-3 [2018-12-01 19:00:04,294 INFO L796 eck$LassoCheckResult]: Loop: 296#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 297#L10 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 306#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 301#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 296#L9-3 [2018-12-01 19:00:04,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,295 INFO L82 PathProgramCache]: Analyzing trace with hash 265236367, now seen corresponding path program 2 times [2018-12-01 19:00:04,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:04,313 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:04,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 19:00:04,329 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 19:00:04,329 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 19:00:04,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,350 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:04,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-01 19:00:04,351 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:04,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1665446, now seen corresponding path program 3 times [2018-12-01 19:00:04,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 19:00:04,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 19:00:04,382 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. cyclomatic complexity: 12 Second operand 6 states. [2018-12-01 19:00:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:04,396 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2018-12-01 19:00:04,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 19:00:04,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 37 transitions. [2018-12-01 19:00:04,397 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 37 transitions. [2018-12-01 19:00:04,398 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-01 19:00:04,398 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 19:00:04,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 37 transitions. [2018-12-01 19:00:04,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:04,398 INFO L705 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-12-01 19:00:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 37 transitions. [2018-12-01 19:00:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-12-01 19:00:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-01 19:00:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2018-12-01 19:00:04,400 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2018-12-01 19:00:04,400 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2018-12-01 19:00:04,400 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-01 19:00:04,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 36 transitions. [2018-12-01 19:00:04,401 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:04,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:04,402 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1] [2018-12-01 19:00:04,402 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:04,402 INFO L794 eck$LassoCheckResult]: Stem: 401#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 399#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 395#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 396#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 397#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 398#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 400#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 407#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 406#L23-3 assume !(main_~i~1 < 5); 394#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 383#L9-3 [2018-12-01 19:00:04,402 INFO L796 eck$LassoCheckResult]: Loop: 383#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 384#L10 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 393#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 388#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 383#L9-3 [2018-12-01 19:00:04,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1489134225, now seen corresponding path program 3 times [2018-12-01 19:00:04,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:04,429 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:04,437 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 19:00:04,448 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 19:00:04,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 19:00:04,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:04,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-01 19:00:04,471 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:04,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1665446, now seen corresponding path program 4 times [2018-12-01 19:00:04,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 19:00:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-01 19:00:04,501 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. cyclomatic complexity: 12 Second operand 7 states. [2018-12-01 19:00:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:04,514 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2018-12-01 19:00:04,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 19:00:04,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2018-12-01 19:00:04,515 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 32 states and 39 transitions. [2018-12-01 19:00:04,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-01 19:00:04,515 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 19:00:04,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 39 transitions. [2018-12-01 19:00:04,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:04,516 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-12-01 19:00:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 39 transitions. [2018-12-01 19:00:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-12-01 19:00:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-01 19:00:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2018-12-01 19:00:04,517 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-12-01 19:00:04,517 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-12-01 19:00:04,517 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-01 19:00:04,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2018-12-01 19:00:04,518 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:04,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:04,518 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2018-12-01 19:00:04,518 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:04,518 INFO L794 eck$LassoCheckResult]: Stem: 501#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 497#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 493#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 494#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 495#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 496#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 498#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 507#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 506#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 505#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 504#L23-3 assume !(main_~i~1 < 5); 492#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 481#L9-3 [2018-12-01 19:00:04,518 INFO L796 eck$LassoCheckResult]: Loop: 481#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 482#L10 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 491#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 486#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 481#L9-3 [2018-12-01 19:00:04,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 4 times [2018-12-01 19:00:04,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:04,547 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:04,553 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 19:00:04,561 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 19:00:04,562 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 19:00:04,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:04,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:04,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-01 19:00:04,582 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:04,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1665446, now seen corresponding path program 5 times [2018-12-01 19:00:04,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 19:00:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-01 19:00:04,609 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 8 states. [2018-12-01 19:00:04,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:04,622 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2018-12-01 19:00:04,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 19:00:04,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2018-12-01 19:00:04,624 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 40 transitions. [2018-12-01 19:00:04,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-01 19:00:04,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 19:00:04,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2018-12-01 19:00:04,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:04,625 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-01 19:00:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2018-12-01 19:00:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-01 19:00:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 19:00:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-01 19:00:04,626 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-01 19:00:04,626 INFO L608 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-01 19:00:04,626 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-01 19:00:04,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 40 transitions. [2018-12-01 19:00:04,627 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2018-12-01 19:00:04,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:04,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:04,627 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2018-12-01 19:00:04,627 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:04,627 INFO L794 eck$LassoCheckResult]: Stem: 606#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 605#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 601#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 602#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 603#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 604#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 617#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 616#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 615#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 614#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 613#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 612#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 611#L23-3 assume !(main_~i~1 < 5); 600#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 589#L9-3 [2018-12-01 19:00:04,627 INFO L796 eck$LassoCheckResult]: Loop: 589#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 590#L10 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 599#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 594#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 589#L9-3 [2018-12-01 19:00:04,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 5 times [2018-12-01 19:00:04,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1665446, now seen corresponding path program 6 times [2018-12-01 19:00:04,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:04,649 INFO L82 PathProgramCache]: Analyzing trace with hash -743539014, now seen corresponding path program 1 times [2018-12-01 19:00:04,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:04,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:04,972 WARN L180 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2018-12-01 19:00:05,013 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 19:00:05,013 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 19:00:05,013 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 19:00:05,014 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 19:00:05,014 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 19:00:05,014 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 19:00:05,014 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 19:00:05,014 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 19:00:05,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: max05_true-unreach-call_true-termination.i_Iteration7_Lasso [2018-12-01 19:00:05,014 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 19:00:05,014 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 19:00:05,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:05,226 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 19:00:05,226 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 19:00:05,226 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,227 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,227 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,227 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,227 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,227 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,227 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,228 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,228 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,229 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,229 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,229 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,229 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,229 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,229 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,230 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,230 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,230 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,231 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,231 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,231 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,231 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,231 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,232 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,232 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,232 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,232 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,233 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,233 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,233 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,233 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,233 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,233 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,234 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,234 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,234 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,234 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,234 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,234 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,235 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:05,235 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:05,236 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,236 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,236 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,237 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,237 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,237 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,237 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,237 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,237 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,237 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,238 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,238 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,238 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,238 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,239 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,239 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,239 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,239 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,239 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,240 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,240 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,240 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,240 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,240 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,240 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,240 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,240 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,241 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,241 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,241 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,241 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,242 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,242 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,242 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,242 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,242 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,242 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,243 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,243 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,244 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,244 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,244 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,244 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,245 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:05,245 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:05,246 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,246 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,247 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,247 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,247 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,247 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,247 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,247 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,248 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,248 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,249 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,249 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,249 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,250 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,250 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,250 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,250 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:05,251 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,251 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,251 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,251 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:05,251 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:05,252 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,252 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,252 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,252 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,252 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,254 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:05,254 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:05,259 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,260 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,260 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,260 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-01 19:00:05,260 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,260 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,262 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-12-01 19:00:05,262 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:05,267 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:05,267 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:05,267 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:05,267 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:05,268 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:05,268 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:05,270 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:05,270 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:05,280 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 19:00:05,285 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 19:00:05,285 INFO L444 ModelExtractionUtils]: 19 out of 22 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 19:00:05,285 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 19:00:05,286 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-01 19:00:05,287 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 19:00:05,287 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_max_~i~0) = -2*ULTIMATE.start_max_~i~0 + 9 Supporting invariants [] [2018-12-01 19:00:05,292 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2018-12-01 19:00:05,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:05,335 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 [2018-12-01 19:00:05,336 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-01 19:00:05,347 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 39 states and 50 transitions. Complement of second has 7 states. [2018-12-01 19:00:05,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 19:00:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 19:00:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-01 19:00:05,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 14 letters. Loop has 4 letters. [2018-12-01 19:00:05,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:05,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 18 letters. Loop has 4 letters. [2018-12-01 19:00:05,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:05,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 14 letters. Loop has 8 letters. [2018-12-01 19:00:05,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:05,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2018-12-01 19:00:05,350 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 42 transitions. [2018-12-01 19:00:05,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-12-01 19:00:05,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-12-01 19:00:05,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2018-12-01 19:00:05,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:05,350 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-12-01 19:00:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2018-12-01 19:00:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-01 19:00:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 19:00:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-12-01 19:00:05,351 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-12-01 19:00:05,351 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-12-01 19:00:05,351 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-01 19:00:05,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 42 transitions. [2018-12-01 19:00:05,352 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:05,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:05,352 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:05,352 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:05,352 INFO L794 eck$LassoCheckResult]: Stem: 771#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 768#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 764#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 765#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 766#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 767#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 780#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 779#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 778#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 777#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 776#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 775#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 774#L23-3 assume !(main_~i~1 < 5); 763#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 751#L9-3 assume !(max_~i~0 < 5); 747#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 748#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 772#L9-8 [2018-12-01 19:00:05,353 INFO L796 eck$LassoCheckResult]: Loop: 772#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 758#L10-3 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 749#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 750#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 772#L9-8 [2018-12-01 19:00:05,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1638581251, now seen corresponding path program 1 times [2018-12-01 19:00:05,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-12-01 19:00:05,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:00:05,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 19:00:05,367 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:05,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2373478, now seen corresponding path program 1 times [2018-12-01 19:00:05,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 19:00:05,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 19:00:05,392 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-12-01 19:00:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:05,409 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2018-12-01 19:00:05,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 19:00:05,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 55 transitions. [2018-12-01 19:00:05,410 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,410 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 55 transitions. [2018-12-01 19:00:05,410 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-12-01 19:00:05,410 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-12-01 19:00:05,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 55 transitions. [2018-12-01 19:00:05,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:05,411 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-12-01 19:00:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 55 transitions. [2018-12-01 19:00:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2018-12-01 19:00:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-01 19:00:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2018-12-01 19:00:05,412 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2018-12-01 19:00:05,412 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2018-12-01 19:00:05,412 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-12-01 19:00:05,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 42 transitions. [2018-12-01 19:00:05,412 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:05,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:05,413 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:05,413 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:05,413 INFO L794 eck$LassoCheckResult]: Stem: 854#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 853#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 849#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 850#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 851#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 852#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 866#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 865#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 864#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 863#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 862#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 861#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 860#L23-3 assume !(main_~i~1 < 5); 848#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 836#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 837#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 847#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 842#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 838#L9-3 assume !(max_~i~0 < 5); 832#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 833#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 857#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 843#L10-3 [2018-12-01 19:00:05,413 INFO L796 eck$LassoCheckResult]: Loop: 843#L10-3 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 834#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 835#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 858#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 843#L10-3 [2018-12-01 19:00:05,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1336698829, now seen corresponding path program 1 times [2018-12-01 19:00:05,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-12-01 19:00:05,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:05,434 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:05,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-12-01 19:00:05,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:05,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-01 19:00:05,483 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:05,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2466748, now seen corresponding path program 2 times [2018-12-01 19:00:05,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 19:00:05,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-01 19:00:05,534 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. cyclomatic complexity: 12 Second operand 5 states. [2018-12-01 19:00:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:05,563 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2018-12-01 19:00:05,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 19:00:05,564 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 70 transitions. [2018-12-01 19:00:05,564 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 57 states and 70 transitions. [2018-12-01 19:00:05,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2018-12-01 19:00:05,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-12-01 19:00:05,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 70 transitions. [2018-12-01 19:00:05,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:05,566 INFO L705 BuchiCegarLoop]: Abstraction has 57 states and 70 transitions. [2018-12-01 19:00:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 70 transitions. [2018-12-01 19:00:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2018-12-01 19:00:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 19:00:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-01 19:00:05,568 INFO L728 BuchiCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-01 19:00:05,568 INFO L608 BuchiCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-01 19:00:05,568 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-12-01 19:00:05,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 52 transitions. [2018-12-01 19:00:05,568 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:05,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:05,569 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:05,569 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:05,569 INFO L794 eck$LassoCheckResult]: Stem: 1020#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 1018#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1014#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1015#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1016#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1017#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1019#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1035#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1034#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1033#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1031#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1030#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1029#L23-3 assume !(main_~i~1 < 5); 1013#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 999#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1000#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1032#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1006#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1001#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1002#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1011#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1012#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1027#L9-3 assume !(max_~i~0 < 5); 995#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 996#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1024#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1037#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1036#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1025#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1023#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1007#L10-3 [2018-12-01 19:00:05,570 INFO L796 eck$LassoCheckResult]: Loop: 1007#L10-3 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 997#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 998#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1028#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1007#L10-3 [2018-12-01 19:00:05,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1525547091, now seen corresponding path program 1 times [2018-12-01 19:00:05,570 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:05,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-01 19:00:05,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:05,596 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:05,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-01 19:00:05,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:05,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-01 19:00:05,649 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:05,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2466748, now seen corresponding path program 3 times [2018-12-01 19:00:05,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:05,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 19:00:05,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 19:00:05,701 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. cyclomatic complexity: 14 Second operand 6 states. [2018-12-01 19:00:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:05,742 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2018-12-01 19:00:05,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 19:00:05,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 85 transitions. [2018-12-01 19:00:05,743 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 69 states and 85 transitions. [2018-12-01 19:00:05,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-12-01 19:00:05,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-12-01 19:00:05,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 85 transitions. [2018-12-01 19:00:05,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:05,744 INFO L705 BuchiCegarLoop]: Abstraction has 69 states and 85 transitions. [2018-12-01 19:00:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 85 transitions. [2018-12-01 19:00:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2018-12-01 19:00:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-01 19:00:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2018-12-01 19:00:05,747 INFO L728 BuchiCegarLoop]: Abstraction has 51 states and 62 transitions. [2018-12-01 19:00:05,747 INFO L608 BuchiCegarLoop]: Abstraction has 51 states and 62 transitions. [2018-12-01 19:00:05,747 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-12-01 19:00:05,747 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 62 transitions. [2018-12-01 19:00:05,747 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:05,747 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:05,748 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:05,748 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:05,748 INFO L794 eck$LassoCheckResult]: Stem: 1230#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 1227#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1223#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1224#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1225#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1226#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1248#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1247#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1246#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1245#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1244#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1243#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1242#L23-3 assume !(main_~i~1 < 5); 1222#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1207#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1208#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1220#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1221#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1209#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1210#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1253#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1214#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1215#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1237#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1252#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1238#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1236#L9-3 assume !(max_~i~0 < 5); 1203#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 1204#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1231#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1232#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1251#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1233#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1234#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1216#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1205#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1206#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1250#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1240#L10-3 [2018-12-01 19:00:05,748 INFO L796 eck$LassoCheckResult]: Loop: 1240#L10-3 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 1249#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1241#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1239#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1240#L10-3 [2018-12-01 19:00:05,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,749 INFO L82 PathProgramCache]: Analyzing trace with hash 452444531, now seen corresponding path program 2 times [2018-12-01 19:00:05,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:05,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-12-01 19:00:05,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:05,784 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:05,793 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 19:00:05,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 19:00:05,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 19:00:05,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-12-01 19:00:05,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:05,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-01 19:00:05,844 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:05,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2466748, now seen corresponding path program 4 times [2018-12-01 19:00:05,844 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:05,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:05,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 19:00:05,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-01 19:00:05,883 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. cyclomatic complexity: 16 Second operand 7 states. [2018-12-01 19:00:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:05,930 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2018-12-01 19:00:05,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 19:00:05,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 100 transitions. [2018-12-01 19:00:05,931 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 81 states and 100 transitions. [2018-12-01 19:00:05,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2018-12-01 19:00:05,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2018-12-01 19:00:05,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 100 transitions. [2018-12-01 19:00:05,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:05,932 INFO L705 BuchiCegarLoop]: Abstraction has 81 states and 100 transitions. [2018-12-01 19:00:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states and 100 transitions. [2018-12-01 19:00:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2018-12-01 19:00:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-01 19:00:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2018-12-01 19:00:05,934 INFO L728 BuchiCegarLoop]: Abstraction has 59 states and 72 transitions. [2018-12-01 19:00:05,934 INFO L608 BuchiCegarLoop]: Abstraction has 59 states and 72 transitions. [2018-12-01 19:00:05,934 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-12-01 19:00:05,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 72 transitions. [2018-12-01 19:00:05,934 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:05,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:05,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:05,935 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:05,935 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:05,935 INFO L794 eck$LassoCheckResult]: Stem: 1481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 1478#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1474#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1475#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1476#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1477#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1497#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1496#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1495#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1494#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1493#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1492#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1491#L23-3 assume !(main_~i~1 < 5); 1473#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1460#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1461#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1472#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1467#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1462#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1463#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1513#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1511#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1509#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1507#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1505#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1503#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1501#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1486#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1499#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1487#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1485#L9-3 assume !(max_~i~0 < 5); 1458#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 1459#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1482#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1468#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1456#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1457#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1483#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1514#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1512#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1510#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1508#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1506#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1504#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1502#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1500#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1489#L10-3 [2018-12-01 19:00:05,935 INFO L796 eck$LassoCheckResult]: Loop: 1489#L10-3 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 1498#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1490#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1488#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1489#L10-3 [2018-12-01 19:00:05,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2023971731, now seen corresponding path program 3 times [2018-12-01 19:00:05,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:05,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:05,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:05,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-12-01 19:00:05,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:00:05,963 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77a379d0-2b22-4364-8fef-0076ea331230/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 19:00:05,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 19:00:05,995 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-01 19:00:05,995 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 19:00:05,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-12-01 19:00:06,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:00:06,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-01 19:00:06,021 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 19:00:06,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash 2466748, now seen corresponding path program 5 times [2018-12-01 19:00:06,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:06,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 19:00:06,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-01 19:00:06,064 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. cyclomatic complexity: 18 Second operand 8 states. [2018-12-01 19:00:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:06,117 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2018-12-01 19:00:06,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 19:00:06,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 103 transitions. [2018-12-01 19:00:06,118 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:06,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 84 states and 103 transitions. [2018-12-01 19:00:06,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2018-12-01 19:00:06,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2018-12-01 19:00:06,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 103 transitions. [2018-12-01 19:00:06,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:06,119 INFO L705 BuchiCegarLoop]: Abstraction has 84 states and 103 transitions. [2018-12-01 19:00:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 103 transitions. [2018-12-01 19:00:06,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2018-12-01 19:00:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-01 19:00:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2018-12-01 19:00:06,122 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 82 transitions. [2018-12-01 19:00:06,122 INFO L608 BuchiCegarLoop]: Abstraction has 67 states and 82 transitions. [2018-12-01 19:00:06,122 INFO L442 BuchiCegarLoop]: ======== Iteration 13============ [2018-12-01 19:00:06,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 82 transitions. [2018-12-01 19:00:06,122 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-12-01 19:00:06,122 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:06,122 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:06,123 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:06,123 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 19:00:06,124 INFO L794 eck$LassoCheckResult]: Stem: 1771#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 1768#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1764#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1765#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1766#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1767#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1793#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1791#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1789#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1787#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1785#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1783#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1782#L23-3 assume !(main_~i~1 < 5); 1763#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1749#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1750#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1811#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1810#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1751#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1752#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1762#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1756#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1757#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1809#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1808#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1807#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1806#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1805#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1803#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1801#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1799#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1776#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1796#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1777#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1775#L9-3 assume !(max_~i~0 < 5); 1745#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 1746#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1772#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1758#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1747#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1748#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1773#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1804#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1802#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1800#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1798#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1797#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1795#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1794#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1792#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1790#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1788#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1786#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1784#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1779#L10-3 [2018-12-01 19:00:06,124 INFO L796 eck$LassoCheckResult]: Loop: 1779#L10-3 assume max_~ret~0 < max_#t~mem1;call max_#t~mem2 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4);max_#t~ite3 := max_#t~mem2; 1781#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1780#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1778#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1779#L10-3 [2018-12-01 19:00:06,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,124 INFO L82 PathProgramCache]: Analyzing trace with hash 669208243, now seen corresponding path program 4 times [2018-12-01 19:00:06,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:06,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2466748, now seen corresponding path program 6 times [2018-12-01 19:00:06,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:06,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash -746698386, now seen corresponding path program 1 times [2018-12-01 19:00:06,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 19:00:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-12-01 19:00:06,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:00:06,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 19:00:06,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 19:00:06,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-12-01 19:00:06,336 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. cyclomatic complexity: 20 Second operand 10 states. [2018-12-01 19:00:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:00:06,453 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2018-12-01 19:00:06,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 19:00:06,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 100 transitions. [2018-12-01 19:00:06,455 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 19:00:06,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 62 states and 73 transitions. [2018-12-01 19:00:06,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-12-01 19:00:06,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2018-12-01 19:00:06,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 73 transitions. [2018-12-01 19:00:06,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:06,456 INFO L705 BuchiCegarLoop]: Abstraction has 62 states and 73 transitions. [2018-12-01 19:00:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 73 transitions. [2018-12-01 19:00:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-12-01 19:00:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-01 19:00:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2018-12-01 19:00:06,458 INFO L728 BuchiCegarLoop]: Abstraction has 62 states and 73 transitions. [2018-12-01 19:00:06,458 INFO L608 BuchiCegarLoop]: Abstraction has 62 states and 73 transitions. [2018-12-01 19:00:06,458 INFO L442 BuchiCegarLoop]: ======== Iteration 14============ [2018-12-01 19:00:06,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 73 transitions. [2018-12-01 19:00:06,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 19:00:06,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 19:00:06,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 19:00:06,459 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:00:06,459 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 19:00:06,460 INFO L794 eck$LassoCheckResult]: Stem: 1941#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 1940#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~post4, main_~i~1, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~2, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.alloc(20);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1936#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1937#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1938#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1939#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1961#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1958#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1955#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1952#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1950#L23-3 assume !!(main_~i~1 < 5);call write~int(main_#t~nondet5, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet5; 1948#L23-2 main_#t~post4 := main_~i~1;main_~i~1 := 1 + main_#t~post4;havoc main_#t~post4; 1947#L23-3 assume !(main_~i~1 < 5); 1935#L23-4 max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1927#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1928#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1934#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1929#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1930#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1984#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1983#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1981#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1979#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1977#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1975#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1973#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1971#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1969#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1967#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1965#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1963#L9-3 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1960#L10 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1957#L10-2 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1954#L9-2 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1946#L9-3 assume !(max_~i~0 < 5); 1923#L9-4 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 1924#L12 main_#t~ret6 := max_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);max_#in~x.base, max_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc max_#res;havoc max_#t~mem1, max_#t~ite3, max_#t~mem2, max_#t~post0, max_~x.base, max_~x.offset, max_~i~0, max_~ret~0;max_~x.base, max_~x.offset := max_#in~x.base, max_#in~x.offset;havoc max_~i~0;havoc max_~ret~0;max_~ret~0 := 0;max_~i~0 := 0; 1944#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1931#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1925#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1926#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1945#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1982#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1980#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1978#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1976#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1974#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1972#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1970#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1968#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1966#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1964#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1962#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1959#L9-8 assume !!(max_~i~0 < 5);call max_#t~mem1 := read~int(max_~x.base, max_~x.offset + 4 * max_~i~0, 4); 1956#L10-3 assume !(max_~ret~0 < max_#t~mem1);max_#t~ite3 := max_~ret~0; 1953#L10-5 max_~ret~0 := max_#t~ite3;havoc max_#t~mem1;havoc max_#t~mem2;havoc max_#t~ite3; 1951#L9-7 max_#t~post0 := max_~i~0;max_~i~0 := 1 + max_#t~post0;havoc max_#t~post0; 1949#L9-8 assume !(max_~i~0 < 5); 1942#L9-9 max_#res := (if max_~ret~0 % 4294967296 <= 2147483647 then max_~ret~0 % 4294967296 else max_~ret~0 % 4294967296 - 4294967296); 1943#L12-1 main_#t~ret9 := max_#res;main_~ret2~0 := main_#t~ret9;havoc main_#t~ret9;call main_#t~mem10 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem10;havoc main_#t~mem10;main_~i~2 := 0; 1932#L32-3 [2018-12-01 19:00:06,460 INFO L796 eck$LassoCheckResult]: Loop: 1932#L32-3 assume !!(main_~i~2 < 4);call main_#t~mem12 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~2), 4);call write~int(main_#t~mem12, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~2, 4);havoc main_#t~mem12; 1933#L32-2 main_#t~post11 := main_~i~2;main_~i~2 := 1 + main_#t~post11;havoc main_#t~post11; 1932#L32-3 [2018-12-01 19:00:06,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,460 INFO L82 PathProgramCache]: Analyzing trace with hash -260352212, now seen corresponding path program 1 times [2018-12-01 19:00:06,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:06,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,500 INFO L82 PathProgramCache]: Analyzing trace with hash 3203, now seen corresponding path program 1 times [2018-12-01 19:00:06,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:06,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1090370322, now seen corresponding path program 1 times [2018-12-01 19:00:06,504 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:00:06,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:00:06,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:00:06,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:00:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 19:00:08,585 WARN L180 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 369 DAG size of output: 284 [2018-12-01 19:00:09,167 WARN L180 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2018-12-01 19:00:09,169 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 19:00:09,169 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 19:00:09,169 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 19:00:09,169 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 19:00:09,169 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 19:00:09,170 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 19:00:09,170 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 19:00:09,170 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 19:00:09,170 INFO L131 ssoRankerPreferences]: Filename of dumped script: max05_true-unreach-call_true-termination.i_Iteration14_Lasso [2018-12-01 19:00:09,170 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 19:00:09,170 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 19:00:09,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 19:00:09,616 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 19:00:09,616 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 19:00:09,616 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,617 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,617 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,617 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,617 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,617 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,617 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,617 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,618 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,618 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,618 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,618 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,618 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,618 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,618 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,619 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,619 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,619 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,619 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,619 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,619 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,619 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,619 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,620 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,620 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,620 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,620 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,621 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,621 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,621 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,621 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,621 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,621 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,621 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,621 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,622 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,622 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,622 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,622 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,622 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,622 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,622 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,622 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,623 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,623 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,623 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,623 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,623 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,623 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,624 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,624 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,625 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,625 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,625 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,625 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,625 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,625 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,625 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,626 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,626 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,626 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,626 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,626 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,626 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,626 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,626 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,627 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,627 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,627 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,627 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,627 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,627 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,628 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,628 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,628 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,628 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,628 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,628 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,629 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,629 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,630 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,630 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,630 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,630 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,630 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,630 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,630 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,631 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,631 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,631 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,631 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,631 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,631 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,631 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,631 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,632 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,632 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,634 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,635 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,635 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,635 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-01 19:00:09,635 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,635 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,636 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-12-01 19:00:09,636 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,638 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,638 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,638 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,638 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 19:00:09,638 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,638 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,638 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,639 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 19:00:09,639 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 19:00:09,639 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,639 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,639 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,639 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,639 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,639 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,640 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,640 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,640 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,641 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,641 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,641 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,641 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,641 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,641 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,642 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,643 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,643 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,643 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,644 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,644 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,644 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,644 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,644 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,644 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,645 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,645 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,645 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,645 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,645 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,645 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,646 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,647 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 19:00:09,647 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 19:00:09,647 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 19:00:09,647 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 19:00:09,647 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 19:00:09,647 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 19:00:09,648 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 19:00:09,648 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 19:00:09,652 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 19:00:09,657 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-01 19:00:09,657 INFO L444 ModelExtractionUtils]: 16 out of 22 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-12-01 19:00:09,657 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 19:00:09,657 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-01 19:00:09,658 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 19:00:09,658 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~2, v_rep(select #length ULTIMATE.start_main_~#x~0.base)_3) = -16*ULTIMATE.start_main_~i~2 + 7*v_rep(select #length ULTIMATE.start_main_~#x~0.base)_3 Supporting invariants [] [2018-12-01 19:00:09,715 INFO L297 tatePredicateManager]: 25 out of 25 supporting invariants were superfluous and have been removed [2018-12-01 19:00:09,716 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-01 19:00:09,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:00:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:09,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:00:09,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:00:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:00:09,762 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 [2018-12-01 19:00:09,762 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 62 states and 73 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-12-01 19:00:09,768 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 62 states and 73 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 64 states and 76 transitions. Complement of second has 4 states. [2018-12-01 19:00:09,768 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 [2018-12-01 19:00:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 19:00:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2018-12-01 19:00:09,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 24 transitions. Stem has 60 letters. Loop has 2 letters. [2018-12-01 19:00:09,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:09,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 24 transitions. Stem has 62 letters. Loop has 2 letters. [2018-12-01 19:00:09,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:09,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 24 transitions. Stem has 60 letters. Loop has 4 letters. [2018-12-01 19:00:09,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 19:00:09,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 76 transitions. [2018-12-01 19:00:09,770 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 19:00:09,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 0 states and 0 transitions. [2018-12-01 19:00:09,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 19:00:09,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 19:00:09,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 19:00:09,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 19:00:09,770 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 19:00:09,770 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 19:00:09,770 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 19:00:09,770 INFO L442 BuchiCegarLoop]: ======== Iteration 15============ [2018-12-01 19:00:09,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 19:00:09,771 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 19:00:09,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 19:00:09,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 07:00:09 BoogieIcfgContainer [2018-12-01 19:00:09,775 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 19:00:09,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 19:00:09,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 19:00:09,776 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 19:00:09,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:00:03" (3/4) ... [2018-12-01 19:00:09,779 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 19:00:09,779 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 19:00:09,779 INFO L168 Benchmark]: Toolchain (without parser) took 6769.88 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 320.9 MB). Free memory was 962.4 MB in the beginning and 1.2 GB in the end (delta: -219.1 MB). Peak memory consumption was 101.8 MB. Max. memory is 11.5 GB. [2018-12-01 19:00:09,780 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 19:00:09,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.27 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 19:00:09,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2018-12-01 19:00:09,781 INFO L168 Benchmark]: Boogie Preprocessor took 21.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-01 19:00:09,781 INFO L168 Benchmark]: RCFGBuilder took 200.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-12-01 19:00:09,781 INFO L168 Benchmark]: BuchiAutomizer took 6358.87 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -74.2 MB). Peak memory consumption was 113.0 MB. Max. memory is 11.5 GB. [2018-12-01 19:00:09,782 INFO L168 Benchmark]: Witness Printer took 3.00 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 19:00:09,784 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 132.27 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 200.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6358.87 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -74.2 MB). Peak memory consumption was 113.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.00 ms. Allocated memory is still 1.4 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (11 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -8 * i + 9 * unknown-#length-unknown[x] and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 9 and consists of 4 locations. One deterministic module has affine ranking function -16 * i + 7 * unknown-#length-unknown[x] and consists of 3 locations. 11 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.3s and 15 iterations. TraceHistogramMax:5. Analysis of lassos took 5.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 14. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 85 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 67 states and ocurred in iteration 12. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 346 SDtfs, 399 SDslu, 704 SDs, 0 SdLazy, 441 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU10 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital254 mio100 ax100 hnf99 lsp95 ukn48 mio100 lsp58 div100 bol100 ite100 ukn100 eq163 hnf87 smp98 dnf100 smp100 tf100 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 5ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 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...