./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f19c27ba74e1ebec32cb641e6640521812ace19 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:04:50,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:04:50,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:04:50,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:04:50,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:04:50,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:04:50,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:04:50,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:04:50,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:04:50,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:04:50,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:04:50,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:04:50,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:04:50,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:04:50,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:04:50,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:04:50,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:04:50,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:04:50,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:04:50,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:04:50,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:04:50,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:04:50,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:04:50,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:04:50,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:04:50,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:04:50,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:04:50,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:04:50,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:04:50,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:04:50,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:04:50,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:04:50,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:04:50,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:04:50,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:04:50,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:04:50,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:04:50,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:04:50,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:04:50,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:04:50,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:04:50,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 15:04:50,375 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:04:50,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:04:50,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:04:50,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:04:50,376 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:04:50,376 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 15:04:50,376 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 15:04:50,376 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 15:04:50,377 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 15:04:50,377 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 15:04:50,377 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 15:04:50,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:04:50,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:04:50,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:04:50,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:04:50,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 15:04:50,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:04:50,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:04:50,379 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 15:04:50,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:04:50,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:04:50,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:04:50,379 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 15:04:50,380 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 15:04:50,380 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f19c27ba74e1ebec32cb641e6640521812ace19 [2019-12-07 15:04:50,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:04:50,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:04:50,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:04:50,485 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:04:50,485 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:04:50,486 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2019-12-07 15:04:50,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/data/9ea47bc24/d7f1717540bb41dd85f16bcd9b5087d4/FLAGdb8f8d97e [2019-12-07 15:04:50,916 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:04:50,917 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/sv-benchmarks/c/termination-restricted-15/Ex08.c [2019-12-07 15:04:50,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/data/9ea47bc24/d7f1717540bb41dd85f16bcd9b5087d4/FLAGdb8f8d97e [2019-12-07 15:04:50,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/data/9ea47bc24/d7f1717540bb41dd85f16bcd9b5087d4 [2019-12-07 15:04:50,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:04:50,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:04:50,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:04:50,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:04:50,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:04:50,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:04:50" (1/1) ... [2019-12-07 15:04:50,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78af6170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:50, skipping insertion in model container [2019-12-07 15:04:50,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:04:50" (1/1) ... [2019-12-07 15:04:50,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:04:50,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:04:51,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:04:51,055 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:04:51,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:04:51,116 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:04:51,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51 WrapperNode [2019-12-07 15:04:51,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:04:51,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:04:51,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:04:51,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:04:51,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:04:51,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:04:51,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:04:51,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:04:51,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... [2019-12-07 15:04:51,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:04:51,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:04:51,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:04:51,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:04:51,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:04:51,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:04:51,297 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:04:51,298 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 15:04:51,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:04:51 BoogieIcfgContainer [2019-12-07 15:04:51,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:04:51,299 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 15:04:51,299 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 15:04:51,302 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 15:04:51,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:04:51,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 03:04:50" (1/3) ... [2019-12-07 15:04:51,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68a26dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:04:51, skipping insertion in model container [2019-12-07 15:04:51,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:04:51,304 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:04:51" (2/3) ... [2019-12-07 15:04:51,304 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68a26dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:04:51, skipping insertion in model container [2019-12-07 15:04:51,304 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:04:51,304 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:04:51" (3/3) ... [2019-12-07 15:04:51,305 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2019-12-07 15:04:51,338 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 15:04:51,338 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 15:04:51,338 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 15:04:51,338 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:04:51,338 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:04:51,338 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 15:04:51,338 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:04:51,339 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 15:04:51,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 15:04:51,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:04:51,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:51,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:51,366 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:04:51,366 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:51,366 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 15:04:51,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 15:04:51,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:04:51,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:51,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:51,367 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:04:51,367 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:51,373 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5#L18-1true [2019-12-07 15:04:51,373 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(main_~i~0 > 0); 6#L12true assume 1 == main_~i~0;main_~up~0 := 1; 3#L12-2true assume 10 == main_~i~0;main_~up~0 := 0; 9#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5#L18-1true [2019-12-07 15:04:51,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,377 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 15:04:51,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071512205] [2019-12-07 15:04:51,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2019-12-07 15:04:51,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280643699] [2019-12-07 15:04:51,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:51,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280643699] [2019-12-07 15:04:51,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:51,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:04:51,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268882712] [2019-12-07 15:04:51,491 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:51,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:04:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:04:51,503 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-12-07 15:04:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:51,533 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2019-12-07 15:04:51,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:04:51,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2019-12-07 15:04:51,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:04:51,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 14 transitions. [2019-12-07 15:04:51,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-12-07 15:04:51,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-12-07 15:04:51,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2019-12-07 15:04:51,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:04:51,540 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 15:04:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2019-12-07 15:04:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 15:04:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:04:51,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-12-07 15:04:51,558 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 15:04:51,558 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 15:04:51,558 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 15:04:51,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-12-07 15:04:51,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:04:51,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:51,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:51,559 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:04:51,559 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:51,559 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 34#L18-1 [2019-12-07 15:04:51,559 INFO L796 eck$LassoCheckResult]: Loop: 34#L18-1 assume !!(main_~i~0 > 0); 39#L12 assume !(1 == main_~i~0); 37#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 38#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 34#L18-1 [2019-12-07 15:04:51,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 15:04:51,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75010336] [2019-12-07 15:04:51,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,564 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2019-12-07 15:04:51,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161039283] [2019-12-07 15:04:51,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:51,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161039283] [2019-12-07 15:04:51,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:51,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:04:51,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137918263] [2019-12-07 15:04:51,576 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:51,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:51,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:04:51,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:04:51,576 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-12-07 15:04:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:51,584 INFO L93 Difference]: Finished difference Result 13 states and 20 transitions. [2019-12-07 15:04:51,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:04:51,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2019-12-07 15:04:51,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 15:04:51,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2019-12-07 15:04:51,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 15:04:51,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 15:04:51,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2019-12-07 15:04:51,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:04:51,586 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-12-07 15:04:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2019-12-07 15:04:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 15:04:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 15:04:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2019-12-07 15:04:51,588 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-12-07 15:04:51,588 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-12-07 15:04:51,588 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 15:04:51,588 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2019-12-07 15:04:51,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 15:04:51,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:51,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:51,589 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:04:51,589 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:51,589 INFO L794 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 62#L18-1 [2019-12-07 15:04:51,590 INFO L796 eck$LassoCheckResult]: Loop: 62#L18-1 assume !!(main_~i~0 > 0); 71#L12 assume !(1 == main_~i~0); 70#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 66#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 62#L18-1 [2019-12-07 15:04:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-12-07 15:04:51,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456885937] [2019-12-07 15:04:51,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2019-12-07 15:04:51,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328883484] [2019-12-07 15:04:51,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,602 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,602 INFO L82 PathProgramCache]: Analyzing trace with hash 29865613, now seen corresponding path program 1 times [2019-12-07 15:04:51,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679265007] [2019-12-07 15:04:51,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,609 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,635 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:51,636 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:51,636 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:51,636 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:51,636 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:51,636 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,636 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:51,636 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:51,636 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2019-12-07 15:04:51,636 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:51,637 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:51,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,711 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:51,711 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:51,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:51,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:51,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:51,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:51,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:51,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:51,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:51,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:51,740 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:51,743 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:51,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:51,754 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:51,755 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:51,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:51,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:51,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:51,755 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:51,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:51,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:51,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2019-12-07 15:04:51,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:51,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:51,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:51,806 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:51,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:51,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:51,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:51,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:51,815 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:51,815 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:51,819 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:51,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:51,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:51,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:51,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:51,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:51,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:51,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,834 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:51,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:51,836 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:51,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:51,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:51,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:51,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:51,837 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:51,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:51,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:51,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:51,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:51,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:51,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:51,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:51,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:51,851 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:51,855 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:04:51,855 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:51,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:51,859 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:51,860 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:51,863 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:51,883 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:51,884 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:51,889 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:51,890 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:51,900 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:04:51,900 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 15:04:51,929 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 28 states and 43 transitions. Complement of second has 5 states. [2019-12-07 15:04:51,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:04:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 15:04:51,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 15:04:51,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:51,932 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 15:04:51,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:51,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 8 letters. [2019-12-07 15:04:51,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:51,933 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2019-12-07 15:04:51,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 15:04:51,935 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 40 transitions. [2019-12-07 15:04:51,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 15:04:51,935 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-12-07 15:04:51,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 40 transitions. [2019-12-07 15:04:51,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:51,935 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2019-12-07 15:04:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 40 transitions. [2019-12-07 15:04:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 15:04:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 15:04:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2019-12-07 15:04:51,938 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2019-12-07 15:04:51,938 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2019-12-07 15:04:51,938 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 15:04:51,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2019-12-07 15:04:51,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 15:04:51,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:51,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:51,939 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 15:04:51,939 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:51,939 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 141#L18-1 assume !!(main_~i~0 > 0); 152#L12 assume 1 == main_~i~0;main_~up~0 := 1; 159#L12-2 assume !(10 == main_~i~0); 154#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 155#L18-1 [2019-12-07 15:04:51,939 INFO L796 eck$LassoCheckResult]: Loop: 155#L18-1 assume !!(main_~i~0 > 0); 161#L12 assume 1 == main_~i~0;main_~up~0 := 1; 136#L12-2 assume !(10 == main_~i~0); 137#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 155#L18-1 [2019-12-07 15:04:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2019-12-07 15:04:51,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122703089] [2019-12-07 15:04:51,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,945 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1234600, now seen corresponding path program 1 times [2019-12-07 15:04:51,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264072460] [2019-12-07 15:04:51,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:51,951 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1816490734, now seen corresponding path program 2 times [2019-12-07 15:04:51,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:51,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139335613] [2019-12-07 15:04:51,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:51,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139335613] [2019-12-07 15:04:51,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:51,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:04:51,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161437473] [2019-12-07 15:04:51,981 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:51,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:51,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:51,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:51,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:51,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:51,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:51,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:51,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2019-12-07 15:04:51,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:51,982 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:51,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:51,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,023 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:52,023 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,029 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,029 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,044 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,048 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:52,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,059 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:52,059 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:52,060 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:52,060 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:52,060 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:52,060 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:52,060 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:52,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:52,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2019-12-07 15:04:52,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:52,060 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:52,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,107 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:52,107 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,115 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:52,115 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:52,118 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,126 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:52,127 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:52,130 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:52,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:52,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:52,139 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:52,142 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:04:52,142 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,145 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:52,145 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:52,146 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:52,146 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2019-12-07 15:04:52,147 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:52,169 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:52,170 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:52,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:52,175 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:52,184 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:04:52,184 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17 Second operand 4 states. [2019-12-07 15:04:52,210 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 43 states and 64 transitions. Complement of second has 7 states. [2019-12-07 15:04:52,211 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 [2019-12-07 15:04:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:04:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 15:04:52,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 15:04:52,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:52,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 9 letters. Loop has 4 letters. [2019-12-07 15:04:52,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:52,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 8 letters. [2019-12-07 15:04:52,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:52,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 64 transitions. [2019-12-07 15:04:52,213 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2019-12-07 15:04:52,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 42 states and 63 transitions. [2019-12-07 15:04:52,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 15:04:52,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-12-07 15:04:52,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 63 transitions. [2019-12-07 15:04:52,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:52,215 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-12-07 15:04:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 63 transitions. [2019-12-07 15:04:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-12-07 15:04:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 15:04:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2019-12-07 15:04:52,218 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2019-12-07 15:04:52,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:52,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:04:52,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:04:52,219 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2019-12-07 15:04:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:52,238 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-12-07 15:04:52,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:04:52,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2019-12-07 15:04:52,240 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2019-12-07 15:04:52,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 41 states and 59 transitions. [2019-12-07 15:04:52,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-12-07 15:04:52,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-12-07 15:04:52,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 59 transitions. [2019-12-07 15:04:52,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:52,241 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2019-12-07 15:04:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 59 transitions. [2019-12-07 15:04:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2019-12-07 15:04:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 15:04:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2019-12-07 15:04:52,244 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-12-07 15:04:52,245 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-12-07 15:04:52,245 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 15:04:52,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2019-12-07 15:04:52,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-12-07 15:04:52,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:52,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:52,246 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 15:04:52,246 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:52,246 INFO L794 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 348#L18-1 assume !!(main_~i~0 > 0); 352#L12 assume 1 == main_~i~0;main_~up~0 := 1; 343#L12-2 assume !(10 == main_~i~0); 344#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 363#L18-1 [2019-12-07 15:04:52,246 INFO L796 eck$LassoCheckResult]: Loop: 363#L18-1 assume !!(main_~i~0 > 0); 354#L12 assume !(1 == main_~i~0); 355#L12-2 assume !(10 == main_~i~0); 364#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 363#L18-1 [2019-12-07 15:04:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 3 times [2019-12-07 15:04:52,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:52,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095015921] [2019-12-07 15:04:52,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,255 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:52,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2019-12-07 15:04:52,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:52,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622476148] [2019-12-07 15:04:52,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,262 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492656, now seen corresponding path program 1 times [2019-12-07 15:04:52,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:52,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309439465] [2019-12-07 15:04:52,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,271 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:52,290 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:52,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:52,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:52,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:52,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:52,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:52,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:52,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2019-12-07 15:04:52,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:52,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:52,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,373 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:52,374 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,380 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,380 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,393 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,404 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:52,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,424 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,425 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=15} Honda state: {ULTIMATE.start_main_~i~0=15} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 9, 11] Nus: [0, 0] [2019-12-07 15:04:52,447 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:52,447 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:52,447 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:52,447 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:52,447 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:52,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:52,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:52,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2019-12-07 15:04:52,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:52,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:52,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,527 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:52,527 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,532 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,542 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,545 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,545 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,551 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,555 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:52,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,567 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:52,568 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:52,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:52,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:52,568 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:52,568 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:52,568 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,568 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:52,568 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:52,568 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2019-12-07 15:04:52,568 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:52,568 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:52,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,642 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:52,642 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:52,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:52,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:52,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:52,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:52,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:52,654 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,657 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,660 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:52,660 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:52,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,666 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:52,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,669 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:52,669 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:52,673 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,682 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:52,683 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:52,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:52,683 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 15:04:52,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:52,688 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-12-07 15:04:52,688 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-12-07 15:04:52,700 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:52,713 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-12-07 15:04:52,713 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,715 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:52,722 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-12-07 15:04:52,722 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:52,722 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0 + 10 >= 0] [2019-12-07 15:04:52,725 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 15:04:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:52,745 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:52,745 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:52,755 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:04:52,755 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:52,765 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 15:04:52,765 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-12-07 15:04:52,805 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 38 states and 55 transitions. Complement of second has 8 states. [2019-12-07 15:04:52,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:04:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-12-07 15:04:52,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 15:04:52,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:52,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 4 letters. [2019-12-07 15:04:52,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:52,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 8 letters. [2019-12-07 15:04:52,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:52,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2019-12-07 15:04:52,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-12-07 15:04:52,808 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 37 states and 54 transitions. [2019-12-07 15:04:52,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-12-07 15:04:52,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-12-07 15:04:52,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2019-12-07 15:04:52,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:52,808 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2019-12-07 15:04:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2019-12-07 15:04:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-12-07 15:04:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 15:04:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2019-12-07 15:04:52,811 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-12-07 15:04:52,811 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-12-07 15:04:52,811 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 15:04:52,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 53 transitions. [2019-12-07 15:04:52,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-12-07 15:04:52,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:52,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:52,812 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 15:04:52,812 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:52,812 INFO L794 eck$LassoCheckResult]: Stem: 476#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 477#L18-1 assume !!(main_~i~0 > 0); 481#L12 assume 1 == main_~i~0;main_~up~0 := 1; 493#L12-2 assume !(10 == main_~i~0); 492#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 491#L18-1 assume !!(main_~i~0 > 0); 483#L12 assume !(1 == main_~i~0); 484#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 473#L15-1 [2019-12-07 15:04:52,812 INFO L796 eck$LassoCheckResult]: Loop: 473#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 478#L18-1 assume !!(main_~i~0 > 0); 479#L12 assume !(1 == main_~i~0); 472#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 473#L15-1 [2019-12-07 15:04:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,812 INFO L82 PathProgramCache]: Analyzing trace with hash 612785863, now seen corresponding path program 1 times [2019-12-07 15:04:52,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:52,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306379048] [2019-12-07 15:04:52,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:52,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306379048] [2019-12-07 15:04:52,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995893124] [2019-12-07 15:04:52,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:52,845 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:04:52,846 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:52,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:52,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 15:04:52,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855523339] [2019-12-07 15:04:52,851 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:52,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:52,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1737972, now seen corresponding path program 2 times [2019-12-07 15:04:52,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:52,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845564812] [2019-12-07 15:04:52,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:52,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:52,880 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:52,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:52,881 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:52,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:52,881 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:52,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:52,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:52,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2019-12-07 15:04:52,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:52,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:52,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:52,925 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:52,925 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,933 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,933 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:52,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:52,940 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_8=1} Honda state: {v_rep~unnamed0~0~true_8=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:52,945 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:52,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:52,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:53,045 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:53,047 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:53,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:53,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:53,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:53,047 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:53,047 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:53,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:53,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:53,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2019-12-07 15:04:53,047 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:53,048 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:53,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:53,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:53,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:53,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:53,105 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:53,105 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:53,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:53,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:53,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:53,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:53,110 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 15:04:53,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:53,111 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 15:04:53,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:53,113 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:53,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:53,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:53,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:53,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:53,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:53,119 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:53,119 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:53,122 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:53,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:53,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:53,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:53,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:53,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:53,128 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:53,128 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:53,131 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:53,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:53,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:53,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:53,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:53,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:53,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:53,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:53,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:53,139 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:53,140 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 15:04:53,140 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:53,143 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:53,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:53,143 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:53,143 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:53,145 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,156 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,157 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,159 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,160 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,170 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:04:53,170 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 53 transitions. cyclomatic complexity: 21 Second operand 4 states. [2019-12-07 15:04:53,189 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 53 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 91 states and 135 transitions. Complement of second has 7 states. [2019-12-07 15:04:53,189 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 [2019-12-07 15:04:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:04:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 15:04:53,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 15:04:53,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:53,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2019-12-07 15:04:53,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:53,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2019-12-07 15:04:53,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:53,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 135 transitions. [2019-12-07 15:04:53,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2019-12-07 15:04:53,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 78 states and 115 transitions. [2019-12-07 15:04:53,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2019-12-07 15:04:53,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-12-07 15:04:53,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 115 transitions. [2019-12-07 15:04:53,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,193 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 115 transitions. [2019-12-07 15:04:53,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 115 transitions. [2019-12-07 15:04:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-12-07 15:04:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 15:04:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 114 transitions. [2019-12-07 15:04:53,198 INFO L711 BuchiCegarLoop]: Abstraction has 77 states and 114 transitions. [2019-12-07 15:04:53,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:04:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:04:53,198 INFO L87 Difference]: Start difference. First operand 77 states and 114 transitions. Second operand 4 states. [2019-12-07 15:04:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,214 INFO L93 Difference]: Finished difference Result 105 states and 148 transitions. [2019-12-07 15:04:53,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:04:53,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 148 transitions. [2019-12-07 15:04:53,216 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2019-12-07 15:04:53,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 148 transitions. [2019-12-07 15:04:53,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 67 [2019-12-07 15:04:53,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2019-12-07 15:04:53,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 148 transitions. [2019-12-07 15:04:53,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,217 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2019-12-07 15:04:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 148 transitions. [2019-12-07 15:04:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2019-12-07 15:04:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-12-07 15:04:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2019-12-07 15:04:53,222 INFO L711 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2019-12-07 15:04:53,222 INFO L591 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2019-12-07 15:04:53,222 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 15:04:53,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 130 transitions. [2019-12-07 15:04:53,223 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2019-12-07 15:04:53,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,223 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-12-07 15:04:53,223 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:04:53,223 INFO L794 eck$LassoCheckResult]: Stem: 867#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 868#L18-1 assume !!(main_~i~0 > 0); 905#L12 assume 1 == main_~i~0;main_~up~0 := 1; 904#L12-2 assume !(10 == main_~i~0); 903#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 901#L18-1 assume !!(main_~i~0 > 0); 902#L12 assume !(1 == main_~i~0); 914#L12-2 assume !(10 == main_~i~0); 912#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 890#L18-1 [2019-12-07 15:04:53,223 INFO L796 eck$LassoCheckResult]: Loop: 890#L18-1 assume !!(main_~i~0 > 0); 908#L12 assume 1 == main_~i~0;main_~up~0 := 1; 899#L12-2 assume !(10 == main_~i~0); 897#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 890#L18-1 [2019-12-07 15:04:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492658, now seen corresponding path program 1 times [2019-12-07 15:04:53,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58633732] [2019-12-07 15:04:53,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:04:53,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58633732] [2019-12-07 15:04:53,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:53,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:04:53,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468198696] [2019-12-07 15:04:53,235 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2019-12-07 15:04:53,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967120396] [2019-12-07 15:04:53,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967120396] [2019-12-07 15:04:53,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:53,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:04:53,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952488037] [2019-12-07 15:04:53,244 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:53,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:04:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:04:53,244 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. cyclomatic complexity: 49 Second operand 3 states. [2019-12-07 15:04:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,250 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2019-12-07 15:04:53,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:04:53,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 77 transitions. [2019-12-07 15:04:53,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-12-07 15:04:53,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 51 states and 63 transitions. [2019-12-07 15:04:53,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-12-07 15:04:53,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-12-07 15:04:53,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 63 transitions. [2019-12-07 15:04:53,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,252 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-12-07 15:04:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 63 transitions. [2019-12-07 15:04:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-12-07 15:04:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 15:04:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2019-12-07 15:04:53,254 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 60 transitions. [2019-12-07 15:04:53,254 INFO L591 BuchiCegarLoop]: Abstraction has 48 states and 60 transitions. [2019-12-07 15:04:53,254 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 15:04:53,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 60 transitions. [2019-12-07 15:04:53,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2019-12-07 15:04:53,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,255 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1] [2019-12-07 15:04:53,255 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 1, 1, 1] [2019-12-07 15:04:53,255 INFO L794 eck$LassoCheckResult]: Stem: 1030#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1031#L18-1 assume !!(main_~i~0 > 0); 1061#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1059#L12-2 assume !(10 == main_~i~0); 1057#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1055#L18-1 assume !!(main_~i~0 > 0); 1048#L12 assume !(1 == main_~i~0); 1051#L12-2 assume !(10 == main_~i~0); 1049#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1047#L18-1 assume !!(main_~i~0 > 0); 1046#L12 assume !(1 == main_~i~0); 1045#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1044#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1034#L18-1 assume !!(main_~i~0 > 0); 1035#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1026#L12-2 [2019-12-07 15:04:53,255 INFO L796 eck$LassoCheckResult]: Loop: 1026#L12-2 assume !(10 == main_~i~0); 1027#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1068#L18-1 assume !!(main_~i~0 > 0); 1036#L12 assume !(1 == main_~i~0); 1037#L12-2 assume !(10 == main_~i~0); 1073#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1032#L18-1 assume !!(main_~i~0 > 0); 1033#L12 assume !(1 == main_~i~0); 1072#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1040#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1041#L18-1 assume !!(main_~i~0 > 0); 1071#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1026#L12-2 [2019-12-07 15:04:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1399375584, now seen corresponding path program 1 times [2019-12-07 15:04:53,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440958978] [2019-12-07 15:04:53,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 15:04:53,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440958978] [2019-12-07 15:04:53,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:53,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:04:53,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053606326] [2019-12-07 15:04:53,270 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:53,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,270 INFO L82 PathProgramCache]: Analyzing trace with hash 388845694, now seen corresponding path program 1 times [2019-12-07 15:04:53,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374824142] [2019-12-07 15:04:53,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374824142] [2019-12-07 15:04:53,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:04:53,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:04:53,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264226843] [2019-12-07 15:04:53,288 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:53,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:04:53,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:04:53,289 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. cyclomatic complexity: 18 Second operand 4 states. [2019-12-07 15:04:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,305 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2019-12-07 15:04:53,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:04:53,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 79 transitions. [2019-12-07 15:04:53,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2019-12-07 15:04:53,306 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 63 states and 78 transitions. [2019-12-07 15:04:53,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-12-07 15:04:53,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-12-07 15:04:53,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 78 transitions. [2019-12-07 15:04:53,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,306 INFO L688 BuchiCegarLoop]: Abstraction has 63 states and 78 transitions. [2019-12-07 15:04:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 78 transitions. [2019-12-07 15:04:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2019-12-07 15:04:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 15:04:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2019-12-07 15:04:53,309 INFO L711 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2019-12-07 15:04:53,309 INFO L591 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2019-12-07 15:04:53,309 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 15:04:53,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 68 transitions. [2019-12-07 15:04:53,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-12-07 15:04:53,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,310 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2019-12-07 15:04:53,310 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2019-12-07 15:04:53,310 INFO L794 eck$LassoCheckResult]: Stem: 1152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1153#L18-1 assume !!(main_~i~0 > 0); 1182#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1180#L12-2 assume !(10 == main_~i~0); 1178#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1176#L18-1 assume !!(main_~i~0 > 0); 1169#L12 assume !(1 == main_~i~0); 1172#L12-2 assume !(10 == main_~i~0); 1170#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1168#L18-1 assume !!(main_~i~0 > 0); 1167#L12 assume !(1 == main_~i~0); 1166#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1160#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1161#L18-1 assume !!(main_~i~0 > 0); 1159#L12 assume !(1 == main_~i~0); 1149#L12-2 assume !(10 == main_~i~0); 1151#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1156#L18-1 assume !!(main_~i~0 > 0); 1157#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1191#L12-2 [2019-12-07 15:04:53,310 INFO L796 eck$LassoCheckResult]: Loop: 1191#L12-2 assume !(10 == main_~i~0); 1162#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1154#L18-1 assume !!(main_~i~0 > 0); 1155#L12 assume !(1 == main_~i~0); 1158#L12-2 assume !(10 == main_~i~0); 1197#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1200#L18-1 assume !!(main_~i~0 > 0); 1199#L12 assume !(1 == main_~i~0); 1196#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1148#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1163#L18-1 assume !!(main_~i~0 > 0); 1194#L12 assume !(1 == main_~i~0); 1195#L12-2 assume !(10 == main_~i~0); 1198#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1202#L18-1 assume !!(main_~i~0 > 0); 1201#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1191#L12-2 [2019-12-07 15:04:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1376811083, now seen corresponding path program 2 times [2019-12-07 15:04:53,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144662760] [2019-12-07 15:04:53,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144662760] [2019-12-07 15:04:53,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270490865] [2019-12-07 15:04:53,341 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,357 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:04:53,357 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,358 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 15:04:53,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2019-12-07 15:04:53,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504843127] [2019-12-07 15:04:53,362 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:53,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash 656081641, now seen corresponding path program 2 times [2019-12-07 15:04:53,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080291818] [2019-12-07 15:04:53,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080291818] [2019-12-07 15:04:53,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428946883] [2019-12-07 15:04:53,378 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,393 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:04:53,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,393 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,394 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 15:04:53,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109534353] [2019-12-07 15:04:53,396 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:53,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:04:53,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:04:53,397 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. cyclomatic complexity: 18 Second operand 5 states. [2019-12-07 15:04:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,416 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-12-07 15:04:53,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:04:53,416 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 94 transitions. [2019-12-07 15:04:53,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2019-12-07 15:04:53,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 75 states and 93 transitions. [2019-12-07 15:04:53,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2019-12-07 15:04:53,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-12-07 15:04:53,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 93 transitions. [2019-12-07 15:04:53,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,418 INFO L688 BuchiCegarLoop]: Abstraction has 75 states and 93 transitions. [2019-12-07 15:04:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states and 93 transitions. [2019-12-07 15:04:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2019-12-07 15:04:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 15:04:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2019-12-07 15:04:53,420 INFO L711 BuchiCegarLoop]: Abstraction has 68 states and 83 transitions. [2019-12-07 15:04:53,420 INFO L591 BuchiCegarLoop]: Abstraction has 68 states and 83 transitions. [2019-12-07 15:04:53,420 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 15:04:53,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 83 transitions. [2019-12-07 15:04:53,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2019-12-07 15:04:53,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,422 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 2, 2, 1, 1] [2019-12-07 15:04:53,422 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2019-12-07 15:04:53,422 INFO L794 eck$LassoCheckResult]: Stem: 1397#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1398#L18-1 assume !!(main_~i~0 > 0); 1422#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1421#L12-2 assume !(10 == main_~i~0); 1420#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1419#L18-1 assume !!(main_~i~0 > 0); 1416#L12 assume !(1 == main_~i~0); 1418#L12-2 assume !(10 == main_~i~0); 1417#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1415#L18-1 assume !!(main_~i~0 > 0); 1414#L12 assume !(1 == main_~i~0); 1413#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1406#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1407#L18-1 assume !!(main_~i~0 > 0); 1457#L12 assume !(1 == main_~i~0); 1456#L12-2 assume !(10 == main_~i~0); 1455#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1454#L18-1 assume !!(main_~i~0 > 0); 1453#L12 assume !(1 == main_~i~0); 1433#L12-2 assume !(10 == main_~i~0); 1439#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1438#L18-1 assume !!(main_~i~0 > 0); 1432#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1431#L12-2 [2019-12-07 15:04:53,422 INFO L796 eck$LassoCheckResult]: Loop: 1431#L12-2 assume !(10 == main_~i~0); 1443#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1440#L18-1 assume !!(main_~i~0 > 0); 1434#L12 assume !(1 == main_~i~0); 1435#L12-2 assume !(10 == main_~i~0); 1428#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1437#L18-1 assume !!(main_~i~0 > 0); 1430#L12 assume !(1 == main_~i~0); 1427#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1393#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1449#L18-1 assume !!(main_~i~0 > 0); 1450#L12 assume !(1 == main_~i~0); 1451#L12-2 assume !(10 == main_~i~0); 1410#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1411#L18-1 assume !!(main_~i~0 > 0); 1403#L12 assume !(1 == main_~i~0); 1404#L12-2 assume !(10 == main_~i~0); 1429#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1399#L18-1 assume !!(main_~i~0 > 0); 1400#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1431#L12-2 [2019-12-07 15:04:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1767603254, now seen corresponding path program 3 times [2019-12-07 15:04:53,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669103829] [2019-12-07 15:04:53,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669103829] [2019-12-07 15:04:53,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051291618] [2019-12-07 15:04:53,461 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,484 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 15:04:53,484 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,485 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,486 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 15:04:53,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2019-12-07 15:04:53,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919844409] [2019-12-07 15:04:53,514 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1254328276, now seen corresponding path program 3 times [2019-12-07 15:04:53,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48834158] [2019-12-07 15:04:53,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48834158] [2019-12-07 15:04:53,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217686298] [2019-12-07 15:04:53,534 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,550 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 15:04:53,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,551 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 15:04:53,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107293984] [2019-12-07 15:04:53,554 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:53,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:04:53,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:04:53,554 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. cyclomatic complexity: 21 Second operand 6 states. [2019-12-07 15:04:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,582 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2019-12-07 15:04:53,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:04:53,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 109 transitions. [2019-12-07 15:04:53,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2019-12-07 15:04:53,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 108 transitions. [2019-12-07 15:04:53,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 15:04:53,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-12-07 15:04:53,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 108 transitions. [2019-12-07 15:04:53,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,584 INFO L688 BuchiCegarLoop]: Abstraction has 87 states and 108 transitions. [2019-12-07 15:04:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 108 transitions. [2019-12-07 15:04:53,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2019-12-07 15:04:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-12-07 15:04:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2019-12-07 15:04:53,586 INFO L711 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2019-12-07 15:04:53,586 INFO L591 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2019-12-07 15:04:53,586 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 15:04:53,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 98 transitions. [2019-12-07 15:04:53,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-12-07 15:04:53,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,587 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,587 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1] [2019-12-07 15:04:53,588 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2019-12-07 15:04:53,588 INFO L794 eck$LassoCheckResult]: Stem: 1696#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1697#L18-1 assume !!(main_~i~0 > 0); 1720#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1719#L12-2 assume !(10 == main_~i~0); 1718#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1717#L18-1 assume !!(main_~i~0 > 0); 1714#L12 assume !(1 == main_~i~0); 1716#L12-2 assume !(10 == main_~i~0); 1715#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1713#L18-1 assume !!(main_~i~0 > 0); 1712#L12 assume !(1 == main_~i~0); 1711#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1704#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1705#L18-1 assume !!(main_~i~0 > 0); 1751#L12 assume !(1 == main_~i~0); 1750#L12-2 assume !(10 == main_~i~0); 1749#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1748#L18-1 assume !!(main_~i~0 > 0); 1747#L12 assume !(1 == main_~i~0); 1746#L12-2 assume !(10 == main_~i~0); 1745#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1744#L18-1 assume !!(main_~i~0 > 0); 1743#L12 assume !(1 == main_~i~0); 1728#L12-2 assume !(10 == main_~i~0); 1732#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1731#L18-1 assume !!(main_~i~0 > 0); 1727#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1709#L12-2 [2019-12-07 15:04:53,588 INFO L796 eck$LassoCheckResult]: Loop: 1709#L12-2 assume !(10 == main_~i~0); 1710#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1762#L18-1 assume !!(main_~i~0 > 0); 1729#L12 assume !(1 == main_~i~0); 1730#L12-2 assume !(10 == main_~i~0); 1741#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1738#L18-1 assume !!(main_~i~0 > 0); 1739#L12 assume !(1 == main_~i~0); 1759#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1692#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1708#L18-1 assume !!(main_~i~0 > 0); 1761#L12 assume !(1 == main_~i~0); 1760#L12-2 assume !(10 == main_~i~0); 1758#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1757#L18-1 assume !!(main_~i~0 > 0); 1756#L12 assume !(1 == main_~i~0); 1755#L12-2 assume !(10 == main_~i~0); 1754#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1753#L18-1 assume !!(main_~i~0 > 0); 1752#L12 assume !(1 == main_~i~0); 1726#L12-2 assume !(10 == main_~i~0); 1736#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1733#L18-1 assume !!(main_~i~0 > 0); 1725#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1709#L12-2 [2019-12-07 15:04:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash 442274465, now seen corresponding path program 4 times [2019-12-07 15:04:53,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558155127] [2019-12-07 15:04:53,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558155127] [2019-12-07 15:04:53,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883807437] [2019-12-07 15:04:53,626 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,643 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:04:53,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,643 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,644 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-07 15:04:53,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2019-12-07 15:04:53,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306685645] [2019-12-07 15:04:53,647 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1418092737, now seen corresponding path program 4 times [2019-12-07 15:04:53,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420263441] [2019-12-07 15:04:53,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420263441] [2019-12-07 15:04:53,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914244354] [2019-12-07 15:04:53,670 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,686 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:04:53,686 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,687 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,687 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 15:04:53,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217589552] [2019-12-07 15:04:53,691 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:53,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:04:53,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:04:53,691 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. cyclomatic complexity: 24 Second operand 7 states. [2019-12-07 15:04:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,727 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2019-12-07 15:04:53,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:04:53,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 124 transitions. [2019-12-07 15:04:53,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2019-12-07 15:04:53,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 99 states and 123 transitions. [2019-12-07 15:04:53,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2019-12-07 15:04:53,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-12-07 15:04:53,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 123 transitions. [2019-12-07 15:04:53,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,729 INFO L688 BuchiCegarLoop]: Abstraction has 99 states and 123 transitions. [2019-12-07 15:04:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 123 transitions. [2019-12-07 15:04:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2019-12-07 15:04:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-12-07 15:04:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2019-12-07 15:04:53,731 INFO L711 BuchiCegarLoop]: Abstraction has 92 states and 113 transitions. [2019-12-07 15:04:53,731 INFO L591 BuchiCegarLoop]: Abstraction has 92 states and 113 transitions. [2019-12-07 15:04:53,731 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-12-07 15:04:53,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 92 states and 113 transitions. [2019-12-07 15:04:53,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2019-12-07 15:04:53,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,732 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 6, 5, 2, 2, 1, 1] [2019-12-07 15:04:53,732 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2019-12-07 15:04:53,733 INFO L794 eck$LassoCheckResult]: Stem: 2041#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2042#L18-1 assume !!(main_~i~0 > 0); 2063#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2062#L12-2 assume !(10 == main_~i~0); 2061#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2060#L18-1 assume !!(main_~i~0 > 0); 2057#L12 assume !(1 == main_~i~0); 2059#L12-2 assume !(10 == main_~i~0); 2058#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2056#L18-1 assume !!(main_~i~0 > 0); 2055#L12 assume !(1 == main_~i~0); 2054#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2048#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2049#L18-1 assume !!(main_~i~0 > 0); 2098#L12 assume !(1 == main_~i~0); 2097#L12-2 assume !(10 == main_~i~0); 2096#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2095#L18-1 assume !!(main_~i~0 > 0); 2094#L12 assume !(1 == main_~i~0); 2093#L12-2 assume !(10 == main_~i~0); 2092#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2091#L18-1 assume !!(main_~i~0 > 0); 2090#L12 assume !(1 == main_~i~0); 2089#L12-2 assume !(10 == main_~i~0); 2088#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2087#L18-1 assume !!(main_~i~0 > 0); 2086#L12 assume !(1 == main_~i~0); 2072#L12-2 assume !(10 == main_~i~0); 2075#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2074#L18-1 assume !!(main_~i~0 > 0); 2071#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2069#L12-2 [2019-12-07 15:04:53,733 INFO L796 eck$LassoCheckResult]: Loop: 2069#L12-2 assume !(10 == main_~i~0); 2084#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2082#L18-1 assume !!(main_~i~0 > 0); 2073#L12 assume !(1 == main_~i~0); 2052#L12-2 assume !(10 == main_~i~0); 2053#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2115#L18-1 assume !!(main_~i~0 > 0); 2113#L12 assume !(1 == main_~i~0); 2111#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2037#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2051#L18-1 assume !!(main_~i~0 > 0); 2114#L12 assume !(1 == main_~i~0); 2112#L12-2 assume !(10 == main_~i~0); 2110#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2109#L18-1 assume !!(main_~i~0 > 0); 2108#L12 assume !(1 == main_~i~0); 2107#L12-2 assume !(10 == main_~i~0); 2106#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2105#L18-1 assume !!(main_~i~0 > 0); 2104#L12 assume !(1 == main_~i~0); 2103#L12-2 assume !(10 == main_~i~0); 2102#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2101#L18-1 assume !!(main_~i~0 > 0); 2100#L12 assume !(1 == main_~i~0); 2070#L12-2 assume !(10 == main_~i~0); 2080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2076#L18-1 assume !!(main_~i~0 > 0); 2068#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2069#L12-2 [2019-12-07 15:04:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1631159412, now seen corresponding path program 5 times [2019-12-07 15:04:53,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779092763] [2019-12-07 15:04:53,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779092763] [2019-12-07 15:04:53,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139581353] [2019-12-07 15:04:53,778 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,795 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 15:04:53,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,795 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,796 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-07 15:04:53,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 11 [2019-12-07 15:04:53,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421868244] [2019-12-07 15:04:53,799 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash 187697450, now seen corresponding path program 5 times [2019-12-07 15:04:53,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852556348] [2019-12-07 15:04:53,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852556348] [2019-12-07 15:04:53,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740132399] [2019-12-07 15:04:53,827 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,845 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-12-07 15:04:53,845 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,845 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,846 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:53,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:53,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 15:04:53,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039749463] [2019-12-07 15:04:53,850 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:53,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:53,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:04:53,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:04:53,850 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. cyclomatic complexity: 27 Second operand 8 states. [2019-12-07 15:04:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:53,886 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2019-12-07 15:04:53,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:04:53,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 139 transitions. [2019-12-07 15:04:53,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2019-12-07 15:04:53,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 111 states and 138 transitions. [2019-12-07 15:04:53,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2019-12-07 15:04:53,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2019-12-07 15:04:53,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 138 transitions. [2019-12-07 15:04:53,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:53,888 INFO L688 BuchiCegarLoop]: Abstraction has 111 states and 138 transitions. [2019-12-07 15:04:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 138 transitions. [2019-12-07 15:04:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2019-12-07 15:04:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-12-07 15:04:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2019-12-07 15:04:53,890 INFO L711 BuchiCegarLoop]: Abstraction has 104 states and 128 transitions. [2019-12-07 15:04:53,890 INFO L591 BuchiCegarLoop]: Abstraction has 104 states and 128 transitions. [2019-12-07 15:04:53,890 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-12-07 15:04:53,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 128 transitions. [2019-12-07 15:04:53,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2019-12-07 15:04:53,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:53,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:53,892 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 7, 6, 2, 2, 1, 1] [2019-12-07 15:04:53,892 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2019-12-07 15:04:53,892 INFO L794 eck$LassoCheckResult]: Stem: 2436#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2437#L18-1 assume !!(main_~i~0 > 0); 2460#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2459#L12-2 assume !(10 == main_~i~0); 2458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2457#L18-1 assume !!(main_~i~0 > 0); 2454#L12 assume !(1 == main_~i~0); 2456#L12-2 assume !(10 == main_~i~0); 2455#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2453#L18-1 assume !!(main_~i~0 > 0); 2452#L12 assume !(1 == main_~i~0); 2451#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2445#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2446#L18-1 assume !!(main_~i~0 > 0); 2500#L12 assume !(1 == main_~i~0); 2499#L12-2 assume !(10 == main_~i~0); 2498#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2497#L18-1 assume !!(main_~i~0 > 0); 2496#L12 assume !(1 == main_~i~0); 2495#L12-2 assume !(10 == main_~i~0); 2494#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2493#L18-1 assume !!(main_~i~0 > 0); 2492#L12 assume !(1 == main_~i~0); 2491#L12-2 assume !(10 == main_~i~0); 2490#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2489#L18-1 assume !!(main_~i~0 > 0); 2488#L12 assume !(1 == main_~i~0); 2487#L12-2 assume !(10 == main_~i~0); 2486#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2485#L18-1 assume !!(main_~i~0 > 0); 2484#L12 assume !(1 == main_~i~0); 2468#L12-2 assume !(10 == main_~i~0); 2472#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2471#L18-1 assume !!(main_~i~0 > 0); 2467#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2449#L12-2 [2019-12-07 15:04:53,892 INFO L796 eck$LassoCheckResult]: Loop: 2449#L12-2 assume !(10 == main_~i~0); 2450#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2479#L18-1 assume !!(main_~i~0 > 0); 2469#L12 assume !(1 == main_~i~0); 2470#L12-2 assume !(10 == main_~i~0); 2481#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2482#L18-1 assume !!(main_~i~0 > 0); 2525#L12 assume !(1 == main_~i~0); 2523#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2432#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2448#L18-1 assume !!(main_~i~0 > 0); 2442#L12 assume !(1 == main_~i~0); 2443#L12-2 assume !(10 == main_~i~0); 2516#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2515#L18-1 assume !!(main_~i~0 > 0); 2514#L12 assume !(1 == main_~i~0); 2513#L12-2 assume !(10 == main_~i~0); 2512#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2511#L18-1 assume !!(main_~i~0 > 0); 2510#L12 assume !(1 == main_~i~0); 2509#L12-2 assume !(10 == main_~i~0); 2508#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2507#L18-1 assume !!(main_~i~0 > 0); 2506#L12 assume !(1 == main_~i~0); 2505#L12-2 assume !(10 == main_~i~0); 2504#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2503#L18-1 assume !!(main_~i~0 > 0); 2502#L12 assume !(1 == main_~i~0); 2466#L12-2 assume !(10 == main_~i~0); 2478#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2476#L18-1 assume !!(main_~i~0 > 0); 2465#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2449#L12-2 [2019-12-07 15:04:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:53,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1729366281, now seen corresponding path program 6 times [2019-12-07 15:04:53,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:53,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566980069] [2019-12-07 15:04:53,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:53,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566980069] [2019-12-07 15:04:53,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473173619] [2019-12-07 15:04:53,944 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:53,963 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-12-07 15:04:53,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:53,964 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:04:53,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 15:04:54,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2019-12-07 15:04:54,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167812936] [2019-12-07 15:04:54,030 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:54,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1954121109, now seen corresponding path program 6 times [2019-12-07 15:04:54,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026405388] [2019-12-07 15:04:54,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:54,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026405388] [2019-12-07 15:04:54,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333501247] [2019-12-07 15:04:54,065 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:54,084 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-12-07 15:04:54,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:54,085 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,086 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:54,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 15:04:54,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214608267] [2019-12-07 15:04:54,090 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:54,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:04:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:04:54,090 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. cyclomatic complexity: 30 Second operand 9 states. [2019-12-07 15:04:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:54,139 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2019-12-07 15:04:54,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:04:54,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 154 transitions. [2019-12-07 15:04:54,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-12-07 15:04:54,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 123 states and 153 transitions. [2019-12-07 15:04:54,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2019-12-07 15:04:54,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-12-07 15:04:54,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 153 transitions. [2019-12-07 15:04:54,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:54,141 INFO L688 BuchiCegarLoop]: Abstraction has 123 states and 153 transitions. [2019-12-07 15:04:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 153 transitions. [2019-12-07 15:04:54,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2019-12-07 15:04:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-12-07 15:04:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2019-12-07 15:04:54,143 INFO L711 BuchiCegarLoop]: Abstraction has 116 states and 143 transitions. [2019-12-07 15:04:54,143 INFO L591 BuchiCegarLoop]: Abstraction has 116 states and 143 transitions. [2019-12-07 15:04:54,143 INFO L424 BuchiCegarLoop]: ======== Iteration 14============ [2019-12-07 15:04:54,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 143 transitions. [2019-12-07 15:04:54,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-12-07 15:04:54,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:54,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:54,144 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 8, 7, 2, 2, 1, 1] [2019-12-07 15:04:54,144 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2019-12-07 15:04:54,145 INFO L794 eck$LassoCheckResult]: Stem: 2888#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2889#L18-1 assume !!(main_~i~0 > 0); 2912#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2911#L12-2 assume !(10 == main_~i~0); 2910#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2909#L18-1 assume !!(main_~i~0 > 0); 2906#L12 assume !(1 == main_~i~0); 2908#L12-2 assume !(10 == main_~i~0); 2907#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2905#L18-1 assume !!(main_~i~0 > 0); 2904#L12 assume !(1 == main_~i~0); 2903#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2897#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2898#L18-1 assume !!(main_~i~0 > 0); 2956#L12 assume !(1 == main_~i~0); 2955#L12-2 assume !(10 == main_~i~0); 2954#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2953#L18-1 assume !!(main_~i~0 > 0); 2952#L12 assume !(1 == main_~i~0); 2951#L12-2 assume !(10 == main_~i~0); 2950#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2949#L18-1 assume !!(main_~i~0 > 0); 2948#L12 assume !(1 == main_~i~0); 2947#L12-2 assume !(10 == main_~i~0); 2946#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2945#L18-1 assume !!(main_~i~0 > 0); 2944#L12 assume !(1 == main_~i~0); 2943#L12-2 assume !(10 == main_~i~0); 2942#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2941#L18-1 assume !!(main_~i~0 > 0); 2940#L12 assume !(1 == main_~i~0); 2939#L12-2 assume !(10 == main_~i~0); 2938#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2937#L18-1 assume !!(main_~i~0 > 0); 2936#L12 assume !(1 == main_~i~0); 2920#L12-2 assume !(10 == main_~i~0); 2924#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2923#L18-1 assume !!(main_~i~0 > 0); 2919#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2901#L12-2 [2019-12-07 15:04:54,145 INFO L796 eck$LassoCheckResult]: Loop: 2901#L12-2 assume !(10 == main_~i~0); 2902#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2931#L18-1 assume !!(main_~i~0 > 0); 2921#L12 assume !(1 == main_~i~0); 2922#L12-2 assume !(10 == main_~i~0); 2933#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2934#L18-1 assume !!(main_~i~0 > 0); 2985#L12 assume !(1 == main_~i~0); 2983#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2884#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2900#L18-1 assume !!(main_~i~0 > 0); 2894#L12 assume !(1 == main_~i~0); 2895#L12-2 assume !(10 == main_~i~0); 2976#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2975#L18-1 assume !!(main_~i~0 > 0); 2974#L12 assume !(1 == main_~i~0); 2973#L12-2 assume !(10 == main_~i~0); 2972#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2971#L18-1 assume !!(main_~i~0 > 0); 2970#L12 assume !(1 == main_~i~0); 2969#L12-2 assume !(10 == main_~i~0); 2968#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2967#L18-1 assume !!(main_~i~0 > 0); 2966#L12 assume !(1 == main_~i~0); 2965#L12-2 assume !(10 == main_~i~0); 2964#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2963#L18-1 assume !!(main_~i~0 > 0); 2962#L12 assume !(1 == main_~i~0); 2961#L12-2 assume !(10 == main_~i~0); 2960#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2959#L18-1 assume !!(main_~i~0 > 0); 2958#L12 assume !(1 == main_~i~0); 2918#L12-2 assume !(10 == main_~i~0); 2930#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2928#L18-1 assume !!(main_~i~0 > 0); 2917#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2901#L12-2 [2019-12-07 15:04:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1010842398, now seen corresponding path program 7 times [2019-12-07 15:04:54,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311495297] [2019-12-07 15:04:54,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:54,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311495297] [2019-12-07 15:04:54,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677576182] [2019-12-07 15:04:54,211 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,228 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-12-07 15:04:54,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 13 [2019-12-07 15:04:54,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649978101] [2019-12-07 15:04:54,233 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash -360131456, now seen corresponding path program 7 times [2019-12-07 15:04:54,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001042293] [2019-12-07 15:04:54,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:54,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001042293] [2019-12-07 15:04:54,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817134094] [2019-12-07 15:04:54,272 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,289 INFO L264 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,290 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:54,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-12-07 15:04:54,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805451448] [2019-12-07 15:04:54,295 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:54,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:54,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:04:54,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:04:54,295 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. cyclomatic complexity: 33 Second operand 10 states. [2019-12-07 15:04:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:54,326 INFO L93 Difference]: Finished difference Result 136 states and 169 transitions. [2019-12-07 15:04:54,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:04:54,326 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2019-12-07 15:04:54,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-12-07 15:04:54,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 135 states and 168 transitions. [2019-12-07 15:04:54,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2019-12-07 15:04:54,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2019-12-07 15:04:54,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 168 transitions. [2019-12-07 15:04:54,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:54,328 INFO L688 BuchiCegarLoop]: Abstraction has 135 states and 168 transitions. [2019-12-07 15:04:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 168 transitions. [2019-12-07 15:04:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 128. [2019-12-07 15:04:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-12-07 15:04:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2019-12-07 15:04:54,330 INFO L711 BuchiCegarLoop]: Abstraction has 128 states and 158 transitions. [2019-12-07 15:04:54,330 INFO L591 BuchiCegarLoop]: Abstraction has 128 states and 158 transitions. [2019-12-07 15:04:54,330 INFO L424 BuchiCegarLoop]: ======== Iteration 15============ [2019-12-07 15:04:54,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 158 transitions. [2019-12-07 15:04:54,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2019-12-07 15:04:54,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:54,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:54,331 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 8, 2, 2, 1, 1] [2019-12-07 15:04:54,331 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2019-12-07 15:04:54,331 INFO L794 eck$LassoCheckResult]: Stem: 3383#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3384#L18-1 assume !!(main_~i~0 > 0); 3405#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3404#L12-2 assume !(10 == main_~i~0); 3403#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3402#L18-1 assume !!(main_~i~0 > 0); 3399#L12 assume !(1 == main_~i~0); 3401#L12-2 assume !(10 == main_~i~0); 3400#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3398#L18-1 assume !!(main_~i~0 > 0); 3397#L12 assume !(1 == main_~i~0); 3396#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3390#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3391#L18-1 assume !!(main_~i~0 > 0); 3452#L12 assume !(1 == main_~i~0); 3451#L12-2 assume !(10 == main_~i~0); 3450#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3449#L18-1 assume !!(main_~i~0 > 0); 3448#L12 assume !(1 == main_~i~0); 3447#L12-2 assume !(10 == main_~i~0); 3446#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3445#L18-1 assume !!(main_~i~0 > 0); 3444#L12 assume !(1 == main_~i~0); 3443#L12-2 assume !(10 == main_~i~0); 3442#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3441#L18-1 assume !!(main_~i~0 > 0); 3440#L12 assume !(1 == main_~i~0); 3439#L12-2 assume !(10 == main_~i~0); 3438#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3437#L18-1 assume !!(main_~i~0 > 0); 3436#L12 assume !(1 == main_~i~0); 3435#L12-2 assume !(10 == main_~i~0); 3434#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3433#L18-1 assume !!(main_~i~0 > 0); 3432#L12 assume !(1 == main_~i~0); 3431#L12-2 assume !(10 == main_~i~0); 3430#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3429#L18-1 assume !!(main_~i~0 > 0); 3428#L12 assume !(1 == main_~i~0); 3414#L12-2 assume !(10 == main_~i~0); 3417#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3416#L18-1 assume !!(main_~i~0 > 0); 3413#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3411#L12-2 [2019-12-07 15:04:54,332 INFO L796 eck$LassoCheckResult]: Loop: 3411#L12-2 assume !(10 == main_~i~0); 3426#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3424#L18-1 assume !!(main_~i~0 > 0); 3415#L12 assume !(1 == main_~i~0); 3394#L12-2 assume !(10 == main_~i~0); 3395#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3481#L18-1 assume !!(main_~i~0 > 0); 3479#L12 assume !(1 == main_~i~0); 3477#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3379#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3393#L18-1 assume !!(main_~i~0 > 0); 3480#L12 assume !(1 == main_~i~0); 3478#L12-2 assume !(10 == main_~i~0); 3476#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3475#L18-1 assume !!(main_~i~0 > 0); 3474#L12 assume !(1 == main_~i~0); 3473#L12-2 assume !(10 == main_~i~0); 3472#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3471#L18-1 assume !!(main_~i~0 > 0); 3470#L12 assume !(1 == main_~i~0); 3469#L12-2 assume !(10 == main_~i~0); 3468#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3467#L18-1 assume !!(main_~i~0 > 0); 3466#L12 assume !(1 == main_~i~0); 3465#L12-2 assume !(10 == main_~i~0); 3464#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3463#L18-1 assume !!(main_~i~0 > 0); 3462#L12 assume !(1 == main_~i~0); 3461#L12-2 assume !(10 == main_~i~0); 3460#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3459#L18-1 assume !!(main_~i~0 > 0); 3458#L12 assume !(1 == main_~i~0); 3457#L12-2 assume !(10 == main_~i~0); 3456#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3455#L18-1 assume !!(main_~i~0 > 0); 3454#L12 assume !(1 == main_~i~0); 3412#L12-2 assume !(10 == main_~i~0); 3422#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3418#L18-1 assume !!(main_~i~0 > 0); 3410#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3411#L12-2 [2019-12-07 15:04:54,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1563122355, now seen corresponding path program 8 times [2019-12-07 15:04:54,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901762700] [2019-12-07 15:04:54,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:04:54,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901762700] [2019-12-07 15:04:54,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464645813] [2019-12-07 15:04:54,405 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:54,425 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:04:54,425 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:54,425 INFO L264 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,426 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 89 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-12-07 15:04:54,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 14 [2019-12-07 15:04:54,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789734953] [2019-12-07 15:04:54,430 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash 422622699, now seen corresponding path program 8 times [2019-12-07 15:04:54,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405882639] [2019-12-07 15:04:54,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:54,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405882639] [2019-12-07 15:04:54,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257046201] [2019-12-07 15:04:54,483 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:54,506 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:04:54,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:54,507 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,508 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 15:04:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 15:04:54,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258383957] [2019-12-07 15:04:54,517 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:04:54,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 15:04:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 15:04:54,517 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. cyclomatic complexity: 36 Second operand 11 states. [2019-12-07 15:04:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:54,578 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2019-12-07 15:04:54,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 15:04:54,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 184 transitions. [2019-12-07 15:04:54,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 46 [2019-12-07 15:04:54,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 147 states and 183 transitions. [2019-12-07 15:04:54,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2019-12-07 15:04:54,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2019-12-07 15:04:54,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 147 states and 183 transitions. [2019-12-07 15:04:54,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:54,582 INFO L688 BuchiCegarLoop]: Abstraction has 147 states and 183 transitions. [2019-12-07 15:04:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states and 183 transitions. [2019-12-07 15:04:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2019-12-07 15:04:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-12-07 15:04:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 173 transitions. [2019-12-07 15:04:54,585 INFO L711 BuchiCegarLoop]: Abstraction has 140 states and 173 transitions. [2019-12-07 15:04:54,585 INFO L591 BuchiCegarLoop]: Abstraction has 140 states and 173 transitions. [2019-12-07 15:04:54,585 INFO L424 BuchiCegarLoop]: ======== Iteration 16============ [2019-12-07 15:04:54,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 140 states and 173 transitions. [2019-12-07 15:04:54,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2019-12-07 15:04:54,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:54,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:54,587 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 9, 2, 2, 1, 1] [2019-12-07 15:04:54,587 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2019-12-07 15:04:54,588 INFO L794 eck$LassoCheckResult]: Stem: 3928#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3929#L18-1 assume !!(main_~i~0 > 0); 3952#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3951#L12-2 assume !(10 == main_~i~0); 3950#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3949#L18-1 assume !!(main_~i~0 > 0); 3946#L12 assume !(1 == main_~i~0); 3948#L12-2 assume !(10 == main_~i~0); 3947#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3945#L18-1 assume !!(main_~i~0 > 0); 3944#L12 assume !(1 == main_~i~0); 3943#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3937#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3938#L18-1 assume !!(main_~i~0 > 0); 4004#L12 assume !(1 == main_~i~0); 4003#L12-2 assume !(10 == main_~i~0); 4002#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4001#L18-1 assume !!(main_~i~0 > 0); 4000#L12 assume !(1 == main_~i~0); 3999#L12-2 assume !(10 == main_~i~0); 3998#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3997#L18-1 assume !!(main_~i~0 > 0); 3996#L12 assume !(1 == main_~i~0); 3995#L12-2 assume !(10 == main_~i~0); 3994#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3993#L18-1 assume !!(main_~i~0 > 0); 3992#L12 assume !(1 == main_~i~0); 3991#L12-2 assume !(10 == main_~i~0); 3990#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3989#L18-1 assume !!(main_~i~0 > 0); 3988#L12 assume !(1 == main_~i~0); 3987#L12-2 assume !(10 == main_~i~0); 3986#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3985#L18-1 assume !!(main_~i~0 > 0); 3984#L12 assume !(1 == main_~i~0); 3983#L12-2 assume !(10 == main_~i~0); 3982#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3981#L18-1 assume !!(main_~i~0 > 0); 3980#L12 assume !(1 == main_~i~0); 3979#L12-2 assume !(10 == main_~i~0); 3978#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3977#L18-1 assume !!(main_~i~0 > 0); 3976#L12 assume !(1 == main_~i~0); 3958#L12-2 assume !(10 == main_~i~0); 3964#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3963#L18-1 assume !!(main_~i~0 > 0); 3957#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3941#L12-2 [2019-12-07 15:04:54,588 INFO L796 eck$LassoCheckResult]: Loop: 3941#L12-2 assume !(10 == main_~i~0); 3942#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3971#L18-1 assume !!(main_~i~0 > 0); 3961#L12 assume !(1 == main_~i~0); 3962#L12-2 assume !(10 == main_~i~0); 3973#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3974#L18-1 assume !!(main_~i~0 > 0); 4041#L12 assume !(1 == main_~i~0); 4039#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3924#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3940#L18-1 assume !!(main_~i~0 > 0); 3934#L12 assume !(1 == main_~i~0); 3935#L12-2 assume !(10 == main_~i~0); 4032#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4031#L18-1 assume !!(main_~i~0 > 0); 4030#L12 assume !(1 == main_~i~0); 4029#L12-2 assume !(10 == main_~i~0); 4028#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4027#L18-1 assume !!(main_~i~0 > 0); 4026#L12 assume !(1 == main_~i~0); 4025#L12-2 assume !(10 == main_~i~0); 4024#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4023#L18-1 assume !!(main_~i~0 > 0); 4022#L12 assume !(1 == main_~i~0); 4021#L12-2 assume !(10 == main_~i~0); 4020#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4019#L18-1 assume !!(main_~i~0 > 0); 4018#L12 assume !(1 == main_~i~0); 4017#L12-2 assume !(10 == main_~i~0); 4016#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4015#L18-1 assume !!(main_~i~0 > 0); 4014#L12 assume !(1 == main_~i~0); 4013#L12-2 assume !(10 == main_~i~0); 4012#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4011#L18-1 assume !!(main_~i~0 > 0); 4010#L12 assume !(1 == main_~i~0); 4009#L12-2 assume !(10 == main_~i~0); 4008#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4007#L18-1 assume !!(main_~i~0 > 0); 4006#L12 assume !(1 == main_~i~0); 3960#L12-2 assume !(10 == main_~i~0); 3970#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3968#L18-1 assume !!(main_~i~0 > 0); 3959#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3941#L12-2 [2019-12-07 15:04:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash 844978232, now seen corresponding path program 9 times [2019-12-07 15:04:54,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883826950] [2019-12-07 15:04:54,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:54,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883826950] [2019-12-07 15:04:54,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921629188] [2019-12-07 15:04:54,613 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:54,636 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-12-07 15:04:54,637 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:54,637 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,638 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:54,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:54,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 15:04:54,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815691266] [2019-12-07 15:04:54,641 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,642 INFO L82 PathProgramCache]: Analyzing trace with hash 82045398, now seen corresponding path program 9 times [2019-12-07 15:04:54,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:54,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256655179] [2019-12-07 15:04:54,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:54,649 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:54,750 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:54,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:54,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:54,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:54,750 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:54,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:54,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:54,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration16_Loop [2019-12-07 15:04:54,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:54,750 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:54,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,785 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:54,785 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:54,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:54,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:54,791 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:54,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:54,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:54,799 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:54,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:54,806 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:54,806 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:54,811 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:54,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:54,822 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:54,823 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:54,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:54,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:54,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:54,823 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:54,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:54,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:54,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration16_Loop [2019-12-07 15:04:54,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:54,824 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:54,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:54,859 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:54,859 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:54,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:54,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:54,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:54,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:54,864 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:54,864 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:54,866 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,871 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:54,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:54,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:54,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:54,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:54,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:54,873 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:54,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,879 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:54,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:54,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:54,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:54,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:54,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:54,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:54,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:54,883 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:54,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:54,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:54,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:54,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:54,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:54,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:54,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:54,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:54,895 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:04:54,895 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:54,898 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:54,898 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:54,898 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:54,898 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:54,900 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,915 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,915 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:54,922 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:04:54,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:54,954 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-12-07 15:04:54,954 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 140 states and 173 transitions. cyclomatic complexity: 39 Second operand 8 states. [2019-12-07 15:04:55,149 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 140 states and 173 transitions. cyclomatic complexity: 39. Second operand 8 states. Result 378 states and 460 transitions. Complement of second has 27 states. [2019-12-07 15:04:55,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:04:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 38 transitions. [2019-12-07 15:04:55,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 38 transitions. Stem has 47 letters. Loop has 44 letters. [2019-12-07 15:04:55,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:55,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 38 transitions. Stem has 91 letters. Loop has 44 letters. [2019-12-07 15:04:55,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:55,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 38 transitions. Stem has 47 letters. Loop has 88 letters. [2019-12-07 15:04:55,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:55,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 378 states and 460 transitions. [2019-12-07 15:04:55,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2019-12-07 15:04:55,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 378 states to 289 states and 350 transitions. [2019-12-07 15:04:55,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 67 [2019-12-07 15:04:55,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2019-12-07 15:04:55,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 350 transitions. [2019-12-07 15:04:55,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:55,156 INFO L688 BuchiCegarLoop]: Abstraction has 289 states and 350 transitions. [2019-12-07 15:04:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 350 transitions. [2019-12-07 15:04:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 197. [2019-12-07 15:04:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-07 15:04:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 242 transitions. [2019-12-07 15:04:55,158 INFO L711 BuchiCegarLoop]: Abstraction has 197 states and 242 transitions. [2019-12-07 15:04:55,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:55,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:04:55,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:04:55,159 INFO L87 Difference]: Start difference. First operand 197 states and 242 transitions. Second operand 5 states. [2019-12-07 15:04:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:55,178 INFO L93 Difference]: Finished difference Result 167 states and 201 transitions. [2019-12-07 15:04:55,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:04:55,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 201 transitions. [2019-12-07 15:04:55,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2019-12-07 15:04:55,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 159 states and 192 transitions. [2019-12-07 15:04:55,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2019-12-07 15:04:55,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2019-12-07 15:04:55,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 192 transitions. [2019-12-07 15:04:55,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:55,181 INFO L688 BuchiCegarLoop]: Abstraction has 159 states and 192 transitions. [2019-12-07 15:04:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 192 transitions. [2019-12-07 15:04:55,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2019-12-07 15:04:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-12-07 15:04:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 185 transitions. [2019-12-07 15:04:55,183 INFO L711 BuchiCegarLoop]: Abstraction has 152 states and 185 transitions. [2019-12-07 15:04:55,183 INFO L591 BuchiCegarLoop]: Abstraction has 152 states and 185 transitions. [2019-12-07 15:04:55,183 INFO L424 BuchiCegarLoop]: ======== Iteration 17============ [2019-12-07 15:04:55,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 185 transitions. [2019-12-07 15:04:55,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 48 [2019-12-07 15:04:55,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:55,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:55,185 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [13, 11, 11, 9, 3, 2, 1, 1] [2019-12-07 15:04:55,185 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2019-12-07 15:04:55,185 INFO L794 eck$LassoCheckResult]: Stem: 5288#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5289#L18-1 assume !!(main_~i~0 > 0); 5316#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5315#L12-2 assume !(10 == main_~i~0); 5314#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5313#L18-1 assume !!(main_~i~0 > 0); 5312#L12 assume !(1 == main_~i~0); 5311#L12-2 assume !(10 == main_~i~0); 5310#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5309#L18-1 assume !!(main_~i~0 > 0); 5306#L12 assume !(1 == main_~i~0); 5308#L12-2 assume !(10 == main_~i~0); 5307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5305#L18-1 assume !!(main_~i~0 > 0); 5304#L12 assume !(1 == main_~i~0); 5303#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5296#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5297#L18-1 assume !!(main_~i~0 > 0); 5359#L12 assume !(1 == main_~i~0); 5358#L12-2 assume !(10 == main_~i~0); 5357#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5356#L18-1 assume !!(main_~i~0 > 0); 5355#L12 assume !(1 == main_~i~0); 5354#L12-2 assume !(10 == main_~i~0); 5353#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5352#L18-1 assume !!(main_~i~0 > 0); 5351#L12 assume !(1 == main_~i~0); 5350#L12-2 assume !(10 == main_~i~0); 5349#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5348#L18-1 assume !!(main_~i~0 > 0); 5347#L12 assume !(1 == main_~i~0); 5346#L12-2 assume !(10 == main_~i~0); 5345#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5344#L18-1 assume !!(main_~i~0 > 0); 5343#L12 assume !(1 == main_~i~0); 5342#L12-2 assume !(10 == main_~i~0); 5341#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5340#L18-1 assume !!(main_~i~0 > 0); 5339#L12 assume !(1 == main_~i~0); 5338#L12-2 assume !(10 == main_~i~0); 5337#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5336#L18-1 assume !!(main_~i~0 > 0); 5335#L12 assume !(1 == main_~i~0); 5334#L12-2 assume !(10 == main_~i~0); 5333#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5332#L18-1 assume !!(main_~i~0 > 0); 5331#L12 assume !(1 == main_~i~0); 5326#L12-2 assume !(10 == main_~i~0); 5329#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5328#L18-1 assume !!(main_~i~0 > 0); 5324#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5325#L12-2 [2019-12-07 15:04:55,185 INFO L796 eck$LassoCheckResult]: Loop: 5325#L12-2 assume !(10 == main_~i~0); 5299#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5290#L18-1 assume !!(main_~i~0 > 0); 5291#L12 assume !(1 == main_~i~0); 5433#L12-2 assume !(10 == main_~i~0); 5435#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5434#L18-1 assume !!(main_~i~0 > 0); 5327#L12 assume !(1 == main_~i~0); 5301#L12-2 assume !(10 == main_~i~0); 5302#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5431#L18-1 assume !!(main_~i~0 > 0); 5429#L12 assume !(1 == main_~i~0); 5427#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5285#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5300#L18-1 assume !!(main_~i~0 > 0); 5294#L12 assume !(1 == main_~i~0); 5295#L12-2 assume !(10 == main_~i~0); 5420#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5418#L18-1 assume !!(main_~i~0 > 0); 5416#L12 assume !(1 == main_~i~0); 5414#L12-2 assume !(10 == main_~i~0); 5412#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5410#L18-1 assume !!(main_~i~0 > 0); 5408#L12 assume !(1 == main_~i~0); 5406#L12-2 assume !(10 == main_~i~0); 5404#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5402#L18-1 assume !!(main_~i~0 > 0); 5400#L12 assume !(1 == main_~i~0); 5398#L12-2 assume !(10 == main_~i~0); 5396#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5394#L18-1 assume !!(main_~i~0 > 0); 5392#L12 assume !(1 == main_~i~0); 5390#L12-2 assume !(10 == main_~i~0); 5388#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5386#L18-1 assume !!(main_~i~0 > 0); 5384#L12 assume !(1 == main_~i~0); 5382#L12-2 assume !(10 == main_~i~0); 5380#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5378#L18-1 assume !!(main_~i~0 > 0); 5376#L12 assume !(1 == main_~i~0); 5374#L12-2 assume !(10 == main_~i~0); 5372#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5370#L18-1 assume !!(main_~i~0 > 0); 5368#L12 assume !(1 == main_~i~0); 5366#L12-2 assume !(10 == main_~i~0); 5364#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5360#L18-1 assume !!(main_~i~0 > 0); 5361#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5325#L12-2 [2019-12-07 15:04:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:55,185 INFO L82 PathProgramCache]: Analyzing trace with hash -890757087, now seen corresponding path program 10 times [2019-12-07 15:04:55,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:55,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923589213] [2019-12-07 15:04:55,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:55,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923589213] [2019-12-07 15:04:55,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230176818] [2019-12-07 15:04:55,207 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:55,227 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:04:55,227 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:55,227 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:04:55,228 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:55,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:55,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 15:04:55,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12116576] [2019-12-07 15:04:55,232 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:55,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:55,232 INFO L82 PathProgramCache]: Analyzing trace with hash -294604097, now seen corresponding path program 10 times [2019-12-07 15:04:55,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:55,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274534369] [2019-12-07 15:04:55,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:55,239 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:55,344 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2019-12-07 15:04:55,350 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:55,350 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:55,350 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:55,350 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:55,350 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:55,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,350 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:55,350 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:55,350 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2019-12-07 15:04:55,350 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:55,350 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:55,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,386 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:55,387 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:55,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:55,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:55,393 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_12=1} Honda state: {v_rep~unnamed0~0~true_12=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:55,397 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:55,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:55,408 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:55,409 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:55,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:55,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:55,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:55,409 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:55,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,409 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:55,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:55,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2019-12-07 15:04:55,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:55,409 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:55,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,445 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:55,445 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:55,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:55,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:55,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:55,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:55,450 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:55,450 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:55,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,455 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:55,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:55,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:55,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:55,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:55,457 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:55,457 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:55,460 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,463 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:55,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:55,464 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:55,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:55,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:55,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:55,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:55,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:55,467 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:55,468 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 15:04:55,468 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,470 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:55,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:55,470 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:55,471 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:55,472 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:55,487 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:55,488 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:55,496 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:04:55,496 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:55,517 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 15:04:55,517 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 152 states and 185 transitions. cyclomatic complexity: 39 Second operand 7 states. [2019-12-07 15:04:55,616 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 152 states and 185 transitions. cyclomatic complexity: 39. Second operand 7 states. Result 486 states and 584 transitions. Complement of second has 19 states. [2019-12-07 15:04:55,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:04:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2019-12-07 15:04:55,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 51 letters. Loop has 48 letters. [2019-12-07 15:04:55,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:55,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 99 letters. Loop has 48 letters. [2019-12-07 15:04:55,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:55,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 51 letters. Loop has 96 letters. [2019-12-07 15:04:55,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:55,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 486 states and 584 transitions. [2019-12-07 15:04:55,621 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2019-12-07 15:04:55,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 486 states to 419 states and 494 transitions. [2019-12-07 15:04:55,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2019-12-07 15:04:55,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2019-12-07 15:04:55,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 419 states and 494 transitions. [2019-12-07 15:04:55,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:55,624 INFO L688 BuchiCegarLoop]: Abstraction has 419 states and 494 transitions. [2019-12-07 15:04:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states and 494 transitions. [2019-12-07 15:04:55,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 385. [2019-12-07 15:04:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-12-07 15:04:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 460 transitions. [2019-12-07 15:04:55,638 INFO L711 BuchiCegarLoop]: Abstraction has 385 states and 460 transitions. [2019-12-07 15:04:55,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:55,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:04:55,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:04:55,639 INFO L87 Difference]: Start difference. First operand 385 states and 460 transitions. Second operand 6 states. [2019-12-07 15:04:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:55,659 INFO L93 Difference]: Finished difference Result 195 states and 228 transitions. [2019-12-07 15:04:55,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:04:55,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 228 transitions. [2019-12-07 15:04:55,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2019-12-07 15:04:55,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 171 states and 204 transitions. [2019-12-07 15:04:55,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2019-12-07 15:04:55,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2019-12-07 15:04:55,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 204 transitions. [2019-12-07 15:04:55,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:55,662 INFO L688 BuchiCegarLoop]: Abstraction has 171 states and 204 transitions. [2019-12-07 15:04:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 204 transitions. [2019-12-07 15:04:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 164. [2019-12-07 15:04:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-12-07 15:04:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 197 transitions. [2019-12-07 15:04:55,664 INFO L711 BuchiCegarLoop]: Abstraction has 164 states and 197 transitions. [2019-12-07 15:04:55,664 INFO L591 BuchiCegarLoop]: Abstraction has 164 states and 197 transitions. [2019-12-07 15:04:55,664 INFO L424 BuchiCegarLoop]: ======== Iteration 18============ [2019-12-07 15:04:55,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 197 transitions. [2019-12-07 15:04:55,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-12-07 15:04:55,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:55,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:55,665 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 12, 9, 4, 2, 1, 1] [2019-12-07 15:04:55,665 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 9, 4, 1, 1] [2019-12-07 15:04:55,666 INFO L794 eck$LassoCheckResult]: Stem: 7004#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 7005#L18-1 assume !!(main_~i~0 > 0); 7033#L12 assume 1 == main_~i~0;main_~up~0 := 1; 7032#L12-2 assume !(10 == main_~i~0); 7031#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7030#L18-1 assume !!(main_~i~0 > 0); 7029#L12 assume !(1 == main_~i~0); 7028#L12-2 assume !(10 == main_~i~0); 7027#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7026#L18-1 assume !!(main_~i~0 > 0); 7025#L12 assume !(1 == main_~i~0); 7024#L12-2 assume !(10 == main_~i~0); 7023#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7022#L18-1 assume !!(main_~i~0 > 0); 7019#L12 assume !(1 == main_~i~0); 7021#L12-2 assume !(10 == main_~i~0); 7020#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7018#L18-1 assume !!(main_~i~0 > 0); 7017#L12 assume !(1 == main_~i~0); 7016#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 7011#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7012#L18-1 assume !!(main_~i~0 > 0); 7076#L12 assume !(1 == main_~i~0); 7075#L12-2 assume !(10 == main_~i~0); 7074#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7073#L18-1 assume !!(main_~i~0 > 0); 7072#L12 assume !(1 == main_~i~0); 7071#L12-2 assume !(10 == main_~i~0); 7070#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7069#L18-1 assume !!(main_~i~0 > 0); 7068#L12 assume !(1 == main_~i~0); 7067#L12-2 assume !(10 == main_~i~0); 7066#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7065#L18-1 assume !!(main_~i~0 > 0); 7064#L12 assume !(1 == main_~i~0); 7063#L12-2 assume !(10 == main_~i~0); 7062#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7061#L18-1 assume !!(main_~i~0 > 0); 7060#L12 assume !(1 == main_~i~0); 7059#L12-2 assume !(10 == main_~i~0); 7058#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7057#L18-1 assume !!(main_~i~0 > 0); 7056#L12 assume !(1 == main_~i~0); 7055#L12-2 assume !(10 == main_~i~0); 7054#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7053#L18-1 assume !!(main_~i~0 > 0); 7052#L12 assume !(1 == main_~i~0); 7051#L12-2 assume !(10 == main_~i~0); 7050#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7049#L18-1 assume !!(main_~i~0 > 0); 7048#L12 assume !(1 == main_~i~0); 7042#L12-2 assume !(10 == main_~i~0); 7046#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7045#L18-1 assume !!(main_~i~0 > 0); 7040#L12 assume 1 == main_~i~0;main_~up~0 := 1; 7041#L12-2 [2019-12-07 15:04:55,666 INFO L796 eck$LassoCheckResult]: Loop: 7041#L12-2 assume !(10 == main_~i~0); 7163#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7162#L18-1 assume !!(main_~i~0 > 0); 7043#L12 assume !(1 == main_~i~0); 7044#L12-2 assume !(10 == main_~i~0); 7161#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7160#L18-1 assume !!(main_~i~0 > 0); 7159#L12 assume !(1 == main_~i~0); 7158#L12-2 assume !(10 == main_~i~0); 7156#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7154#L18-1 assume !!(main_~i~0 > 0); 7152#L12 assume !(1 == main_~i~0); 7151#L12-2 assume !(10 == main_~i~0); 7146#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7149#L18-1 assume !!(main_~i~0 > 0); 7148#L12 assume !(1 == main_~i~0); 7145#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 7001#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7014#L18-1 assume !!(main_~i~0 > 0); 7141#L12 assume !(1 == main_~i~0); 7139#L12-2 assume !(10 == main_~i~0); 7137#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7135#L18-1 assume !!(main_~i~0 > 0); 7133#L12 assume !(1 == main_~i~0); 7131#L12-2 assume !(10 == main_~i~0); 7129#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7127#L18-1 assume !!(main_~i~0 > 0); 7125#L12 assume !(1 == main_~i~0); 7123#L12-2 assume !(10 == main_~i~0); 7121#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7119#L18-1 assume !!(main_~i~0 > 0); 7117#L12 assume !(1 == main_~i~0); 7115#L12-2 assume !(10 == main_~i~0); 7113#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7111#L18-1 assume !!(main_~i~0 > 0); 7109#L12 assume !(1 == main_~i~0); 7107#L12-2 assume !(10 == main_~i~0); 7105#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7103#L18-1 assume !!(main_~i~0 > 0); 7101#L12 assume !(1 == main_~i~0); 7099#L12-2 assume !(10 == main_~i~0); 7097#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7095#L18-1 assume !!(main_~i~0 > 0); 7093#L12 assume !(1 == main_~i~0); 7091#L12-2 assume !(10 == main_~i~0); 7089#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7087#L18-1 assume !!(main_~i~0 > 0); 7085#L12 assume !(1 == main_~i~0); 7084#L12-2 assume !(10 == main_~i~0); 7082#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7079#L18-1 assume !!(main_~i~0 > 0); 7080#L12 assume 1 == main_~i~0;main_~up~0 := 1; 7041#L12-2 [2019-12-07 15:04:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash 260754314, now seen corresponding path program 11 times [2019-12-07 15:04:55,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:55,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194111065] [2019-12-07 15:04:55,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:55,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194111065] [2019-12-07 15:04:55,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140341478] [2019-12-07 15:04:55,692 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:55,719 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 15:04:55,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:55,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:04:55,720 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:55,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:55,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 15:04:55,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320022187] [2019-12-07 15:04:55,724 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1093459752, now seen corresponding path program 11 times [2019-12-07 15:04:55,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:55,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764767086] [2019-12-07 15:04:55,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:55,732 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:55,851 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 51 [2019-12-07 15:04:55,863 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:55,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:55,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:55,864 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:55,864 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:55,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:55,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:55,864 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2019-12-07 15:04:55,864 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:55,864 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:55,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,906 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:55,906 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:55,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:55,911 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:55,911 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_14=1} Honda state: {v_rep~unnamed0~0~true_14=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:55,915 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,922 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:55,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:55,925 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:55,927 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:55,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:55,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:55,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:55,927 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:55,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:55,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:55,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2019-12-07 15:04:55,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:55,927 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:55,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:55,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:55,965 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:55,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:55,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:55,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:55,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:55,971 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:55,971 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:55,973 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:55,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:55,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:55,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:55,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:55,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:55,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:55,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:55,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:55,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:04:55,984 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:55,986 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:55,987 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:55,987 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:55,987 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:55,988 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,004 INFO L264 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:56,004 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:04:56,013 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:56,038 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-12-07 15:04:56,038 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 197 transitions. cyclomatic complexity: 39 Second operand 8 states. [2019-12-07 15:04:56,165 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 197 transitions. cyclomatic complexity: 39. Second operand 8 states. Result 586 states and 700 transitions. Complement of second has 23 states. [2019-12-07 15:04:56,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:04:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 53 transitions. [2019-12-07 15:04:56,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 55 letters. Loop has 52 letters. [2019-12-07 15:04:56,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:56,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 107 letters. Loop has 52 letters. [2019-12-07 15:04:56,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:56,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 55 letters. Loop has 104 letters. [2019-12-07 15:04:56,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:56,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 586 states and 700 transitions. [2019-12-07 15:04:56,170 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2019-12-07 15:04:56,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 586 states to 485 states and 570 transitions. [2019-12-07 15:04:56,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2019-12-07 15:04:56,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2019-12-07 15:04:56,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 485 states and 570 transitions. [2019-12-07 15:04:56,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:56,174 INFO L688 BuchiCegarLoop]: Abstraction has 485 states and 570 transitions. [2019-12-07 15:04:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states and 570 transitions. [2019-12-07 15:04:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 441. [2019-12-07 15:04:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-12-07 15:04:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 526 transitions. [2019-12-07 15:04:56,182 INFO L711 BuchiCegarLoop]: Abstraction has 441 states and 526 transitions. [2019-12-07 15:04:56,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:04:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:04:56,183 INFO L87 Difference]: Start difference. First operand 441 states and 526 transitions. Second operand 7 states. [2019-12-07 15:04:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:56,208 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2019-12-07 15:04:56,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:04:56,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 248 transitions. [2019-12-07 15:04:56,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2019-12-07 15:04:56,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 183 states and 216 transitions. [2019-12-07 15:04:56,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2019-12-07 15:04:56,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2019-12-07 15:04:56,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 216 transitions. [2019-12-07 15:04:56,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:56,211 INFO L688 BuchiCegarLoop]: Abstraction has 183 states and 216 transitions. [2019-12-07 15:04:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 216 transitions. [2019-12-07 15:04:56,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2019-12-07 15:04:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-12-07 15:04:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 209 transitions. [2019-12-07 15:04:56,213 INFO L711 BuchiCegarLoop]: Abstraction has 176 states and 209 transitions. [2019-12-07 15:04:56,213 INFO L591 BuchiCegarLoop]: Abstraction has 176 states and 209 transitions. [2019-12-07 15:04:56,213 INFO L424 BuchiCegarLoop]: ======== Iteration 19============ [2019-12-07 15:04:56,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 176 states and 209 transitions. [2019-12-07 15:04:56,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 56 [2019-12-07 15:04:56,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:56,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:56,215 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [15, 13, 13, 9, 5, 2, 1, 1] [2019-12-07 15:04:56,215 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 9, 5, 1, 1] [2019-12-07 15:04:56,215 INFO L794 eck$LassoCheckResult]: Stem: 8953#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8954#L18-1 assume !!(main_~i~0 > 0); 8986#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8985#L12-2 assume !(10 == main_~i~0); 8984#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8983#L18-1 assume !!(main_~i~0 > 0); 8982#L12 assume !(1 == main_~i~0); 8981#L12-2 assume !(10 == main_~i~0); 8980#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8979#L18-1 assume !!(main_~i~0 > 0); 8978#L12 assume !(1 == main_~i~0); 8977#L12-2 assume !(10 == main_~i~0); 8976#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8975#L18-1 assume !!(main_~i~0 > 0); 8974#L12 assume !(1 == main_~i~0); 8973#L12-2 assume !(10 == main_~i~0); 8972#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8971#L18-1 assume !!(main_~i~0 > 0); 8968#L12 assume !(1 == main_~i~0); 8970#L12-2 assume !(10 == main_~i~0); 8969#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8967#L18-1 assume !!(main_~i~0 > 0); 8966#L12 assume !(1 == main_~i~0); 8965#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8960#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8961#L18-1 assume !!(main_~i~0 > 0); 9029#L12 assume !(1 == main_~i~0); 9028#L12-2 assume !(10 == main_~i~0); 9027#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9026#L18-1 assume !!(main_~i~0 > 0); 9025#L12 assume !(1 == main_~i~0); 9024#L12-2 assume !(10 == main_~i~0); 9023#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9022#L18-1 assume !!(main_~i~0 > 0); 9021#L12 assume !(1 == main_~i~0); 9020#L12-2 assume !(10 == main_~i~0); 9019#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9018#L18-1 assume !!(main_~i~0 > 0); 9017#L12 assume !(1 == main_~i~0); 9016#L12-2 assume !(10 == main_~i~0); 9015#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9014#L18-1 assume !!(main_~i~0 > 0); 9013#L12 assume !(1 == main_~i~0); 9012#L12-2 assume !(10 == main_~i~0); 9011#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9010#L18-1 assume !!(main_~i~0 > 0); 9009#L12 assume !(1 == main_~i~0); 9008#L12-2 assume !(10 == main_~i~0); 9007#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9006#L18-1 assume !!(main_~i~0 > 0); 9005#L12 assume !(1 == main_~i~0); 9004#L12-2 assume !(10 == main_~i~0); 9003#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9002#L18-1 assume !!(main_~i~0 > 0); 9001#L12 assume !(1 == main_~i~0); 8995#L12-2 assume !(10 == main_~i~0); 8999#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8998#L18-1 assume !!(main_~i~0 > 0); 8993#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8994#L12-2 [2019-12-07 15:04:56,215 INFO L796 eck$LassoCheckResult]: Loop: 8994#L12-2 assume !(10 == main_~i~0); 9124#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9121#L18-1 assume !!(main_~i~0 > 0); 8996#L12 assume !(1 == main_~i~0); 8997#L12-2 assume !(10 == main_~i~0); 9123#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9122#L18-1 assume !!(main_~i~0 > 0); 9120#L12 assume !(1 == main_~i~0); 9119#L12-2 assume !(10 == main_~i~0); 9118#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9117#L18-1 assume !!(main_~i~0 > 0); 9115#L12 assume !(1 == main_~i~0); 9113#L12-2 assume !(10 == main_~i~0); 9111#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9109#L18-1 assume !!(main_~i~0 > 0); 9107#L12 assume !(1 == main_~i~0); 9105#L12-2 assume !(10 == main_~i~0); 9100#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9103#L18-1 assume !!(main_~i~0 > 0); 9101#L12 assume !(1 == main_~i~0); 9099#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8950#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8963#L18-1 assume !!(main_~i~0 > 0); 9093#L12 assume !(1 == main_~i~0); 9091#L12-2 assume !(10 == main_~i~0); 9089#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9087#L18-1 assume !!(main_~i~0 > 0); 9085#L12 assume !(1 == main_~i~0); 9083#L12-2 assume !(10 == main_~i~0); 9081#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9079#L18-1 assume !!(main_~i~0 > 0); 9077#L12 assume !(1 == main_~i~0); 9075#L12-2 assume !(10 == main_~i~0); 9073#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9071#L18-1 assume !!(main_~i~0 > 0); 9069#L12 assume !(1 == main_~i~0); 9067#L12-2 assume !(10 == main_~i~0); 9065#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9063#L18-1 assume !!(main_~i~0 > 0); 9061#L12 assume !(1 == main_~i~0); 9059#L12-2 assume !(10 == main_~i~0); 9057#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9055#L18-1 assume !!(main_~i~0 > 0); 9053#L12 assume !(1 == main_~i~0); 9051#L12-2 assume !(10 == main_~i~0); 9049#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9047#L18-1 assume !!(main_~i~0 > 0); 9045#L12 assume !(1 == main_~i~0); 9043#L12-2 assume !(10 == main_~i~0); 9041#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9039#L18-1 assume !!(main_~i~0 > 0); 9038#L12 assume !(1 == main_~i~0); 9036#L12-2 assume !(10 == main_~i~0); 9034#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9030#L18-1 assume !!(main_~i~0 > 0); 9031#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8994#L12-2 [2019-12-07 15:04:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1566074253, now seen corresponding path program 12 times [2019-12-07 15:04:56,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:56,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371509184] [2019-12-07 15:04:56,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:56,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371509184] [2019-12-07 15:04:56,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683573957] [2019-12-07 15:04:56,246 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:56,275 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-12-07 15:04:56,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:56,276 INFO L264 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:04:56,277 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:56,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:56,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 15:04:56,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522412494] [2019-12-07 15:04:56,282 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1203416849, now seen corresponding path program 12 times [2019-12-07 15:04:56,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:56,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751186201] [2019-12-07 15:04:56,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:56,289 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:56,430 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 54 [2019-12-07 15:04:56,439 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:56,439 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:56,439 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:56,439 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:56,439 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:56,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:56,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:56,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2019-12-07 15:04:56,440 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:56,440 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:56,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:56,474 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:56,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:56,481 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:56,481 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_16=1} Honda state: {v_rep~unnamed0~0~true_16=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:56,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:56,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:56,487 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:56,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:56,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:56,494 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_16=0} Honda state: {v_rep~unnamed0~0~false_16=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:56,499 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:56,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:56,511 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:56,512 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:56,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:56,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:56,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:56,512 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:56,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:56,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:56,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2019-12-07 15:04:56,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:56,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:56,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:56,552 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:56,552 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,554 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:56,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:56,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:56,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:56,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:56,557 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:56,557 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:56,559 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:56,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:56,563 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:56,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:56,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:56,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:56,564 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:56,564 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:56,565 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,568 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:56,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:56,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:56,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:56,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:56,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:56,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:56,574 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,578 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:56,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:56,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:56,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:56,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:56,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:56,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:56,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:56,581 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:56,583 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 15:04:56,583 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:56,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:56,586 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:56,586 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:56,586 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:56,587 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,602 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:56,603 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,614 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:04:56,615 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:56,652 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 15:04:56,652 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 176 states and 209 transitions. cyclomatic complexity: 39 Second operand 9 states. [2019-12-07 15:04:56,835 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 176 states and 209 transitions. cyclomatic complexity: 39. Second operand 9 states. Result 702 states and 836 transitions. Complement of second has 27 states. [2019-12-07 15:04:56,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:04:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 62 transitions. [2019-12-07 15:04:56,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 59 letters. Loop has 56 letters. [2019-12-07 15:04:56,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:56,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 115 letters. Loop has 56 letters. [2019-12-07 15:04:56,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:56,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 59 letters. Loop has 112 letters. [2019-12-07 15:04:56,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:56,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 702 states and 836 transitions. [2019-12-07 15:04:56,840 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2019-12-07 15:04:56,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 702 states to 559 states and 656 transitions. [2019-12-07 15:04:56,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2019-12-07 15:04:56,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2019-12-07 15:04:56,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 559 states and 656 transitions. [2019-12-07 15:04:56,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:56,853 INFO L688 BuchiCegarLoop]: Abstraction has 559 states and 656 transitions. [2019-12-07 15:04:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states and 656 transitions. [2019-12-07 15:04:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 505. [2019-12-07 15:04:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-12-07 15:04:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 602 transitions. [2019-12-07 15:04:56,859 INFO L711 BuchiCegarLoop]: Abstraction has 505 states and 602 transitions. [2019-12-07 15:04:56,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:04:56,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:04:56,860 INFO L87 Difference]: Start difference. First operand 505 states and 602 transitions. Second operand 8 states. [2019-12-07 15:04:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:56,897 INFO L93 Difference]: Finished difference Result 235 states and 268 transitions. [2019-12-07 15:04:56,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:04:56,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 235 states and 268 transitions. [2019-12-07 15:04:56,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2019-12-07 15:04:56,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 235 states to 195 states and 228 transitions. [2019-12-07 15:04:56,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2019-12-07 15:04:56,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2019-12-07 15:04:56,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 195 states and 228 transitions. [2019-12-07 15:04:56,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:56,900 INFO L688 BuchiCegarLoop]: Abstraction has 195 states and 228 transitions. [2019-12-07 15:04:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states and 228 transitions. [2019-12-07 15:04:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2019-12-07 15:04:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-07 15:04:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2019-12-07 15:04:56,901 INFO L711 BuchiCegarLoop]: Abstraction has 188 states and 221 transitions. [2019-12-07 15:04:56,901 INFO L591 BuchiCegarLoop]: Abstraction has 188 states and 221 transitions. [2019-12-07 15:04:56,901 INFO L424 BuchiCegarLoop]: ======== Iteration 20============ [2019-12-07 15:04:56,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 221 transitions. [2019-12-07 15:04:56,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 60 [2019-12-07 15:04:56,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:56,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:56,903 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 2, 1, 1] [2019-12-07 15:04:56,903 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2019-12-07 15:04:56,903 INFO L794 eck$LassoCheckResult]: Stem: 11159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 11160#L18-1 assume !!(main_~i~0 > 0); 11198#L12 assume 1 == main_~i~0;main_~up~0 := 1; 11197#L12-2 assume !(10 == main_~i~0); 11196#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11195#L18-1 assume !!(main_~i~0 > 0); 11194#L12 assume !(1 == main_~i~0); 11193#L12-2 assume !(10 == main_~i~0); 11192#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11191#L18-1 assume !!(main_~i~0 > 0); 11190#L12 assume !(1 == main_~i~0); 11189#L12-2 assume !(10 == main_~i~0); 11188#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11187#L18-1 assume !!(main_~i~0 > 0); 11186#L12 assume !(1 == main_~i~0); 11185#L12-2 assume !(10 == main_~i~0); 11184#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11183#L18-1 assume !!(main_~i~0 > 0); 11182#L12 assume !(1 == main_~i~0); 11181#L12-2 assume !(10 == main_~i~0); 11180#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11179#L18-1 assume !!(main_~i~0 > 0); 11176#L12 assume !(1 == main_~i~0); 11178#L12-2 assume !(10 == main_~i~0); 11177#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11175#L18-1 assume !!(main_~i~0 > 0); 11174#L12 assume !(1 == main_~i~0); 11173#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 11167#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11168#L18-1 assume !!(main_~i~0 > 0); 11241#L12 assume !(1 == main_~i~0); 11240#L12-2 assume !(10 == main_~i~0); 11239#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11238#L18-1 assume !!(main_~i~0 > 0); 11237#L12 assume !(1 == main_~i~0); 11236#L12-2 assume !(10 == main_~i~0); 11235#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11234#L18-1 assume !!(main_~i~0 > 0); 11233#L12 assume !(1 == main_~i~0); 11232#L12-2 assume !(10 == main_~i~0); 11231#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11230#L18-1 assume !!(main_~i~0 > 0); 11229#L12 assume !(1 == main_~i~0); 11228#L12-2 assume !(10 == main_~i~0); 11227#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11226#L18-1 assume !!(main_~i~0 > 0); 11225#L12 assume !(1 == main_~i~0); 11224#L12-2 assume !(10 == main_~i~0); 11223#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11222#L18-1 assume !!(main_~i~0 > 0); 11221#L12 assume !(1 == main_~i~0); 11220#L12-2 assume !(10 == main_~i~0); 11219#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11218#L18-1 assume !!(main_~i~0 > 0); 11217#L12 assume !(1 == main_~i~0); 11216#L12-2 assume !(10 == main_~i~0); 11215#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11214#L18-1 assume !!(main_~i~0 > 0); 11213#L12 assume !(1 == main_~i~0); 11206#L12-2 assume !(10 == main_~i~0); 11211#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11210#L18-1 assume !!(main_~i~0 > 0); 11204#L12 assume 1 == main_~i~0;main_~up~0 := 1; 11205#L12-2 [2019-12-07 15:04:56,903 INFO L796 eck$LassoCheckResult]: Loop: 11205#L12-2 assume !(10 == main_~i~0); 11336#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11334#L18-1 assume !!(main_~i~0 > 0); 11208#L12 assume !(1 == main_~i~0); 11209#L12-2 assume !(10 == main_~i~0); 11330#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11329#L18-1 assume !!(main_~i~0 > 0); 11328#L12 assume !(1 == main_~i~0); 11327#L12-2 assume !(10 == main_~i~0); 11326#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11325#L18-1 assume !!(main_~i~0 > 0); 11324#L12 assume !(1 == main_~i~0); 11323#L12-2 assume !(10 == main_~i~0); 11322#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11321#L18-1 assume !!(main_~i~0 > 0); 11320#L12 assume !(1 == main_~i~0); 11319#L12-2 assume !(10 == main_~i~0); 11318#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11317#L18-1 assume !!(main_~i~0 > 0); 11316#L12 assume !(1 == main_~i~0); 11315#L12-2 assume !(10 == main_~i~0); 11311#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11313#L18-1 assume !!(main_~i~0 > 0); 11312#L12 assume !(1 == main_~i~0); 11310#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 11156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11171#L18-1 assume !!(main_~i~0 > 0); 11165#L12 assume !(1 == main_~i~0); 11166#L12-2 assume !(10 == main_~i~0); 11302#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11300#L18-1 assume !!(main_~i~0 > 0); 11298#L12 assume !(1 == main_~i~0); 11296#L12-2 assume !(10 == main_~i~0); 11294#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11292#L18-1 assume !!(main_~i~0 > 0); 11290#L12 assume !(1 == main_~i~0); 11288#L12-2 assume !(10 == main_~i~0); 11286#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11284#L18-1 assume !!(main_~i~0 > 0); 11282#L12 assume !(1 == main_~i~0); 11280#L12-2 assume !(10 == main_~i~0); 11278#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11276#L18-1 assume !!(main_~i~0 > 0); 11274#L12 assume !(1 == main_~i~0); 11272#L12-2 assume !(10 == main_~i~0); 11270#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11268#L18-1 assume !!(main_~i~0 > 0); 11266#L12 assume !(1 == main_~i~0); 11264#L12-2 assume !(10 == main_~i~0); 11262#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11260#L18-1 assume !!(main_~i~0 > 0); 11258#L12 assume !(1 == main_~i~0); 11256#L12-2 assume !(10 == main_~i~0); 11254#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11252#L18-1 assume !!(main_~i~0 > 0); 11250#L12 assume !(1 == main_~i~0); 11248#L12-2 assume !(10 == main_~i~0); 11246#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11242#L18-1 assume !!(main_~i~0 > 0); 11243#L12 assume 1 == main_~i~0;main_~up~0 := 1; 11205#L12-2 [2019-12-07 15:04:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:56,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1417622308, now seen corresponding path program 13 times [2019-12-07 15:04:56,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:56,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679217289] [2019-12-07 15:04:56,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:56,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679217289] [2019-12-07 15:04:56,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682164377] [2019-12-07 15:04:56,937 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:56,958 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:04:56,959 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:56,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:56,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-12-07 15:04:56,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124774461] [2019-12-07 15:04:56,964 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1315151238, now seen corresponding path program 13 times [2019-12-07 15:04:56,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:56,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664447557] [2019-12-07 15:04:56,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:56,972 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:57,121 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2019-12-07 15:04:57,126 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:57,126 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:57,126 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:57,126 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:57,126 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:57,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:57,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:57,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2019-12-07 15:04:57,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:57,126 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:57,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,161 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:57,161 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,166 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:57,166 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_18=1} Honda state: {v_rep~unnamed0~0~true_18=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:57,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:57,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_18=0} Honda state: {v_rep~unnamed0~0~false_18=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,183 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:57,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,193 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:57,193 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:57,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:57,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:57,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:57,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:57,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:57,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:57,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2019-12-07 15:04:57,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:57,194 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:57,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,228 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:57,228 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:57,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:57,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:57,233 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:57,239 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:57,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,245 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,247 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:57,247 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:57,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,256 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:57,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:57,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:57,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:57,262 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:04:57,262 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:57,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:57,264 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:57,264 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:57,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:57,282 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:57,283 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:57,293 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:04:57,294 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:57,340 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2019-12-07 15:04:57,340 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 221 transitions. cyclomatic complexity: 39 Second operand 10 states. [2019-12-07 15:04:57,544 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 221 transitions. cyclomatic complexity: 39. Second operand 10 states. Result 834 states and 992 transitions. Complement of second has 31 states. [2019-12-07 15:04:57,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 15:04:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 71 transitions. [2019-12-07 15:04:57,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 63 letters. Loop has 60 letters. [2019-12-07 15:04:57,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:57,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 123 letters. Loop has 60 letters. [2019-12-07 15:04:57,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:57,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 63 letters. Loop has 120 letters. [2019-12-07 15:04:57,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:57,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 834 states and 992 transitions. [2019-12-07 15:04:57,548 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2019-12-07 15:04:57,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 834 states to 641 states and 752 transitions. [2019-12-07 15:04:57,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2019-12-07 15:04:57,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 140 [2019-12-07 15:04:57,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 641 states and 752 transitions. [2019-12-07 15:04:57,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:57,551 INFO L688 BuchiCegarLoop]: Abstraction has 641 states and 752 transitions. [2019-12-07 15:04:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states and 752 transitions. [2019-12-07 15:04:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 577. [2019-12-07 15:04:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-12-07 15:04:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 688 transitions. [2019-12-07 15:04:57,556 INFO L711 BuchiCegarLoop]: Abstraction has 577 states and 688 transitions. [2019-12-07 15:04:57,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:04:57,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:04:57,556 INFO L87 Difference]: Start difference. First operand 577 states and 688 transitions. Second operand 9 states. [2019-12-07 15:04:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:57,593 INFO L93 Difference]: Finished difference Result 255 states and 288 transitions. [2019-12-07 15:04:57,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:04:57,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 255 states and 288 transitions. [2019-12-07 15:04:57,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2019-12-07 15:04:57,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 255 states to 207 states and 240 transitions. [2019-12-07 15:04:57,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2019-12-07 15:04:57,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2019-12-07 15:04:57,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 240 transitions. [2019-12-07 15:04:57,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:57,595 INFO L688 BuchiCegarLoop]: Abstraction has 207 states and 240 transitions. [2019-12-07 15:04:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 240 transitions. [2019-12-07 15:04:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2019-12-07 15:04:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2019-12-07 15:04:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 233 transitions. [2019-12-07 15:04:57,597 INFO L711 BuchiCegarLoop]: Abstraction has 200 states and 233 transitions. [2019-12-07 15:04:57,597 INFO L591 BuchiCegarLoop]: Abstraction has 200 states and 233 transitions. [2019-12-07 15:04:57,597 INFO L424 BuchiCegarLoop]: ======== Iteration 21============ [2019-12-07 15:04:57,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 200 states and 233 transitions. [2019-12-07 15:04:57,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 64 [2019-12-07 15:04:57,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:57,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:57,598 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [17, 15, 15, 9, 7, 2, 1, 1] [2019-12-07 15:04:57,598 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 9, 7, 1, 1] [2019-12-07 15:04:57,599 INFO L794 eck$LassoCheckResult]: Stem: 13646#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 13647#L18-1 assume !!(main_~i~0 > 0); 13688#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13687#L12-2 assume !(10 == main_~i~0); 13686#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13685#L18-1 assume !!(main_~i~0 > 0); 13684#L12 assume !(1 == main_~i~0); 13683#L12-2 assume !(10 == main_~i~0); 13682#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13681#L18-1 assume !!(main_~i~0 > 0); 13680#L12 assume !(1 == main_~i~0); 13679#L12-2 assume !(10 == main_~i~0); 13678#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13677#L18-1 assume !!(main_~i~0 > 0); 13676#L12 assume !(1 == main_~i~0); 13675#L12-2 assume !(10 == main_~i~0); 13674#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13673#L18-1 assume !!(main_~i~0 > 0); 13672#L12 assume !(1 == main_~i~0); 13671#L12-2 assume !(10 == main_~i~0); 13670#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13669#L18-1 assume !!(main_~i~0 > 0); 13668#L12 assume !(1 == main_~i~0); 13667#L12-2 assume !(10 == main_~i~0); 13666#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13665#L18-1 assume !!(main_~i~0 > 0); 13662#L12 assume !(1 == main_~i~0); 13664#L12-2 assume !(10 == main_~i~0); 13663#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13661#L18-1 assume !!(main_~i~0 > 0); 13660#L12 assume !(1 == main_~i~0); 13659#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13654#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13655#L18-1 assume !!(main_~i~0 > 0); 13826#L12 assume !(1 == main_~i~0); 13825#L12-2 assume !(10 == main_~i~0); 13824#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13823#L18-1 assume !!(main_~i~0 > 0); 13815#L12 assume !(1 == main_~i~0); 13812#L12-2 assume !(10 == main_~i~0); 13809#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13806#L18-1 assume !!(main_~i~0 > 0); 13803#L12 assume !(1 == main_~i~0); 13800#L12-2 assume !(10 == main_~i~0); 13797#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13794#L18-1 assume !!(main_~i~0 > 0); 13791#L12 assume !(1 == main_~i~0); 13788#L12-2 assume !(10 == main_~i~0); 13785#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13782#L18-1 assume !!(main_~i~0 > 0); 13779#L12 assume !(1 == main_~i~0); 13776#L12-2 assume !(10 == main_~i~0); 13773#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13770#L18-1 assume !!(main_~i~0 > 0); 13767#L12 assume !(1 == main_~i~0); 13764#L12-2 assume !(10 == main_~i~0); 13761#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13758#L18-1 assume !!(main_~i~0 > 0); 13755#L12 assume !(1 == main_~i~0); 13752#L12-2 assume !(10 == main_~i~0); 13749#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13746#L18-1 assume !!(main_~i~0 > 0); 13743#L12 assume !(1 == main_~i~0); 13731#L12-2 assume !(10 == main_~i~0); 13739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13736#L18-1 assume !!(main_~i~0 > 0); 13730#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13642#L12-2 [2019-12-07 15:04:57,599 INFO L796 eck$LassoCheckResult]: Loop: 13642#L12-2 assume !(10 == main_~i~0); 13643#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13727#L18-1 assume !!(main_~i~0 > 0); 13726#L12 assume !(1 == main_~i~0); 13725#L12-2 assume !(10 == main_~i~0); 13724#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13723#L18-1 assume !!(main_~i~0 > 0); 13722#L12 assume !(1 == main_~i~0); 13721#L12-2 assume !(10 == main_~i~0); 13720#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13719#L18-1 assume !!(main_~i~0 > 0); 13718#L12 assume !(1 == main_~i~0); 13717#L12-2 assume !(10 == main_~i~0); 13716#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13715#L18-1 assume !!(main_~i~0 > 0); 13714#L12 assume !(1 == main_~i~0); 13713#L12-2 assume !(10 == main_~i~0); 13712#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13711#L18-1 assume !!(main_~i~0 > 0); 13710#L12 assume !(1 == main_~i~0); 13709#L12-2 assume !(10 == main_~i~0); 13708#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13707#L18-1 assume !!(main_~i~0 > 0); 13706#L12 assume !(1 == main_~i~0); 13705#L12-2 assume !(10 == main_~i~0); 13697#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13702#L18-1 assume !!(main_~i~0 > 0); 13699#L12 assume !(1 == main_~i~0); 13696#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13657#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13658#L18-1 assume !!(main_~i~0 > 0); 13652#L12 assume !(1 == main_~i~0); 13653#L12-2 assume !(10 == main_~i~0); 13695#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13818#L18-1 assume !!(main_~i~0 > 0); 13816#L12 assume !(1 == main_~i~0); 13813#L12-2 assume !(10 == main_~i~0); 13810#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13807#L18-1 assume !!(main_~i~0 > 0); 13804#L12 assume !(1 == main_~i~0); 13801#L12-2 assume !(10 == main_~i~0); 13798#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13795#L18-1 assume !!(main_~i~0 > 0); 13792#L12 assume !(1 == main_~i~0); 13789#L12-2 assume !(10 == main_~i~0); 13786#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13783#L18-1 assume !!(main_~i~0 > 0); 13780#L12 assume !(1 == main_~i~0); 13777#L12-2 assume !(10 == main_~i~0); 13774#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13771#L18-1 assume !!(main_~i~0 > 0); 13768#L12 assume !(1 == main_~i~0); 13765#L12-2 assume !(10 == main_~i~0); 13762#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13759#L18-1 assume !!(main_~i~0 > 0); 13756#L12 assume !(1 == main_~i~0); 13753#L12-2 assume !(10 == main_~i~0); 13750#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13747#L18-1 assume !!(main_~i~0 > 0); 13744#L12 assume !(1 == main_~i~0); 13733#L12-2 assume !(10 == main_~i~0); 13740#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13737#L18-1 assume !!(main_~i~0 > 0); 13732#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13642#L12-2 [2019-12-07 15:04:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:57,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1714987717, now seen corresponding path program 14 times [2019-12-07 15:04:57,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:57,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341401714] [2019-12-07 15:04:57,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:57,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341401714] [2019-12-07 15:04:57,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663578592] [2019-12-07 15:04:57,639 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:57,659 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:04:57,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:57,660 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:04:57,660 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:57,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:57,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 15:04:57,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115576313] [2019-12-07 15:04:57,666 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash 590625123, now seen corresponding path program 14 times [2019-12-07 15:04:57,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:57,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28171699] [2019-12-07 15:04:57,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:57,673 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:57,835 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 60 [2019-12-07 15:04:57,840 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:57,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:57,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:57,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:57,840 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:57,840 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,840 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:57,840 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:57,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2019-12-07 15:04:57,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:57,841 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:57,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:57,875 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:57,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:57,889 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_20=0} Honda state: {v_rep~unnamed0~0~false_20=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:57,895 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_20=1} Honda state: {v_rep~unnamed0~0~true_20=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:57,899 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:57,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:57,908 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:57,909 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:57,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:57,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:57,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:57,909 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:57,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:57,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:57,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2019-12-07 15:04:57,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:57,909 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:57,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:57,954 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:57,954 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,957 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:57,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,958 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:57,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:57,960 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,964 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:57,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:57,968 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:57,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:57,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:57,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:57,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:57,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:57,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:57,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:57,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:57,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:57,984 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:57,985 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 15:04:57,985 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:57,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:57,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:57,988 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:57,988 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:57,989 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:57,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:58,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:58,010 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:58,021 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:04:58,022 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:58,078 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2019-12-07 15:04:58,078 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 200 states and 233 transitions. cyclomatic complexity: 39 Second operand 11 states. [2019-12-07 15:04:58,336 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 200 states and 233 transitions. cyclomatic complexity: 39. Second operand 11 states. Result 982 states and 1168 transitions. Complement of second has 35 states. [2019-12-07 15:04:58,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 15:04:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 80 transitions. [2019-12-07 15:04:58,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 67 letters. Loop has 64 letters. [2019-12-07 15:04:58,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:58,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 131 letters. Loop has 64 letters. [2019-12-07 15:04:58,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:58,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 67 letters. Loop has 128 letters. [2019-12-07 15:04:58,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:58,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 982 states and 1168 transitions. [2019-12-07 15:04:58,341 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 68 [2019-12-07 15:04:58,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 982 states to 731 states and 858 transitions. [2019-12-07 15:04:58,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2019-12-07 15:04:58,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2019-12-07 15:04:58,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 731 states and 858 transitions. [2019-12-07 15:04:58,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:58,344 INFO L688 BuchiCegarLoop]: Abstraction has 731 states and 858 transitions. [2019-12-07 15:04:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states and 858 transitions. [2019-12-07 15:04:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 657. [2019-12-07 15:04:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-12-07 15:04:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 784 transitions. [2019-12-07 15:04:58,350 INFO L711 BuchiCegarLoop]: Abstraction has 657 states and 784 transitions. [2019-12-07 15:04:58,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:58,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:04:58,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:04:58,351 INFO L87 Difference]: Start difference. First operand 657 states and 784 transitions. Second operand 10 states. [2019-12-07 15:04:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:58,393 INFO L93 Difference]: Finished difference Result 275 states and 308 transitions. [2019-12-07 15:04:58,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:04:58,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 275 states and 308 transitions. [2019-12-07 15:04:58,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2019-12-07 15:04:58,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 275 states to 219 states and 252 transitions. [2019-12-07 15:04:58,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2019-12-07 15:04:58,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2019-12-07 15:04:58,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 252 transitions. [2019-12-07 15:04:58,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:58,396 INFO L688 BuchiCegarLoop]: Abstraction has 219 states and 252 transitions. [2019-12-07 15:04:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 252 transitions. [2019-12-07 15:04:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 212. [2019-12-07 15:04:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-12-07 15:04:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2019-12-07 15:04:58,399 INFO L711 BuchiCegarLoop]: Abstraction has 212 states and 245 transitions. [2019-12-07 15:04:58,399 INFO L591 BuchiCegarLoop]: Abstraction has 212 states and 245 transitions. [2019-12-07 15:04:58,399 INFO L424 BuchiCegarLoop]: ======== Iteration 22============ [2019-12-07 15:04:58,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 245 transitions. [2019-12-07 15:04:58,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2019-12-07 15:04:58,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:58,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:58,401 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [18, 16, 16, 9, 8, 2, 1, 1] [2019-12-07 15:04:58,401 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 9, 8, 1, 1] [2019-12-07 15:04:58,401 INFO L794 eck$LassoCheckResult]: Stem: 16438#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 16439#L18-1 assume !!(main_~i~0 > 0); 16484#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16483#L12-2 assume !(10 == main_~i~0); 16482#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16481#L18-1 assume !!(main_~i~0 > 0); 16480#L12 assume !(1 == main_~i~0); 16479#L12-2 assume !(10 == main_~i~0); 16478#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16477#L18-1 assume !!(main_~i~0 > 0); 16476#L12 assume !(1 == main_~i~0); 16475#L12-2 assume !(10 == main_~i~0); 16474#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16473#L18-1 assume !!(main_~i~0 > 0); 16472#L12 assume !(1 == main_~i~0); 16471#L12-2 assume !(10 == main_~i~0); 16470#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16469#L18-1 assume !!(main_~i~0 > 0); 16468#L12 assume !(1 == main_~i~0); 16467#L12-2 assume !(10 == main_~i~0); 16466#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16465#L18-1 assume !!(main_~i~0 > 0); 16464#L12 assume !(1 == main_~i~0); 16463#L12-2 assume !(10 == main_~i~0); 16462#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16461#L18-1 assume !!(main_~i~0 > 0); 16460#L12 assume !(1 == main_~i~0); 16459#L12-2 assume !(10 == main_~i~0); 16458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16457#L18-1 assume !!(main_~i~0 > 0); 16454#L12 assume !(1 == main_~i~0); 16456#L12-2 assume !(10 == main_~i~0); 16455#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16453#L18-1 assume !!(main_~i~0 > 0); 16452#L12 assume !(1 == main_~i~0); 16451#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16446#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16447#L18-1 assume !!(main_~i~0 > 0); 16621#L12 assume !(1 == main_~i~0); 16620#L12-2 assume !(10 == main_~i~0); 16619#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16618#L18-1 assume !!(main_~i~0 > 0); 16616#L12 assume !(1 == main_~i~0); 16613#L12-2 assume !(10 == main_~i~0); 16610#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16607#L18-1 assume !!(main_~i~0 > 0); 16604#L12 assume !(1 == main_~i~0); 16601#L12-2 assume !(10 == main_~i~0); 16598#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16595#L18-1 assume !!(main_~i~0 > 0); 16592#L12 assume !(1 == main_~i~0); 16589#L12-2 assume !(10 == main_~i~0); 16586#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16583#L18-1 assume !!(main_~i~0 > 0); 16580#L12 assume !(1 == main_~i~0); 16577#L12-2 assume !(10 == main_~i~0); 16574#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16571#L18-1 assume !!(main_~i~0 > 0); 16568#L12 assume !(1 == main_~i~0); 16565#L12-2 assume !(10 == main_~i~0); 16562#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16559#L18-1 assume !!(main_~i~0 > 0); 16556#L12 assume !(1 == main_~i~0); 16553#L12-2 assume !(10 == main_~i~0); 16550#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16547#L18-1 assume !!(main_~i~0 > 0); 16544#L12 assume !(1 == main_~i~0); 16533#L12-2 assume !(10 == main_~i~0); 16540#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16537#L18-1 assume !!(main_~i~0 > 0); 16532#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16434#L12-2 [2019-12-07 15:04:58,401 INFO L796 eck$LassoCheckResult]: Loop: 16434#L12-2 assume !(10 == main_~i~0); 16435#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16527#L18-1 assume !!(main_~i~0 > 0); 16526#L12 assume !(1 == main_~i~0); 16525#L12-2 assume !(10 == main_~i~0); 16524#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16523#L18-1 assume !!(main_~i~0 > 0); 16522#L12 assume !(1 == main_~i~0); 16521#L12-2 assume !(10 == main_~i~0); 16520#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16519#L18-1 assume !!(main_~i~0 > 0); 16518#L12 assume !(1 == main_~i~0); 16517#L12-2 assume !(10 == main_~i~0); 16516#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16515#L18-1 assume !!(main_~i~0 > 0); 16514#L12 assume !(1 == main_~i~0); 16513#L12-2 assume !(10 == main_~i~0); 16512#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16511#L18-1 assume !!(main_~i~0 > 0); 16510#L12 assume !(1 == main_~i~0); 16509#L12-2 assume !(10 == main_~i~0); 16508#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16507#L18-1 assume !!(main_~i~0 > 0); 16506#L12 assume !(1 == main_~i~0); 16505#L12-2 assume !(10 == main_~i~0); 16504#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16503#L18-1 assume !!(main_~i~0 > 0); 16502#L12 assume !(1 == main_~i~0); 16501#L12-2 assume !(10 == main_~i~0); 16493#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16498#L18-1 assume !!(main_~i~0 > 0); 16495#L12 assume !(1 == main_~i~0); 16492#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16449#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16450#L18-1 assume !!(main_~i~0 > 0); 16444#L12 assume !(1 == main_~i~0); 16445#L12-2 assume !(10 == main_~i~0); 16491#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16617#L18-1 assume !!(main_~i~0 > 0); 16615#L12 assume !(1 == main_~i~0); 16612#L12-2 assume !(10 == main_~i~0); 16609#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16606#L18-1 assume !!(main_~i~0 > 0); 16603#L12 assume !(1 == main_~i~0); 16600#L12-2 assume !(10 == main_~i~0); 16597#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16594#L18-1 assume !!(main_~i~0 > 0); 16591#L12 assume !(1 == main_~i~0); 16588#L12-2 assume !(10 == main_~i~0); 16585#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16582#L18-1 assume !!(main_~i~0 > 0); 16579#L12 assume !(1 == main_~i~0); 16576#L12-2 assume !(10 == main_~i~0); 16573#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16570#L18-1 assume !!(main_~i~0 > 0); 16567#L12 assume !(1 == main_~i~0); 16564#L12-2 assume !(10 == main_~i~0); 16561#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16558#L18-1 assume !!(main_~i~0 > 0); 16555#L12 assume !(1 == main_~i~0); 16552#L12-2 assume !(10 == main_~i~0); 16549#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16546#L18-1 assume !!(main_~i~0 > 0); 16543#L12 assume !(1 == main_~i~0); 16531#L12-2 assume !(10 == main_~i~0); 16539#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16536#L18-1 assume !!(main_~i~0 > 0); 16530#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16434#L12-2 [2019-12-07 15:04:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1278125010, now seen corresponding path program 15 times [2019-12-07 15:04:58,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:58,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376314064] [2019-12-07 15:04:58,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 120 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:58,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376314064] [2019-12-07 15:04:58,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563499917] [2019-12-07 15:04:58,456 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:04:58,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-12-07 15:04:58,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:04:58,492 INFO L264 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 15:04:58,493 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 226 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-12-07 15:04:58,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:04:58,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-12-07 15:04:58,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876641253] [2019-12-07 15:04:58,509 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:04:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash -976981044, now seen corresponding path program 15 times [2019-12-07 15:04:58,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:58,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431515790] [2019-12-07 15:04:58,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:58,519 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:58,703 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 63 [2019-12-07 15:04:58,709 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:58,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:58,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:58,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:58,709 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:04:58,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:58,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:58,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2019-12-07 15:04:58,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:58,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:58,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,743 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:58,743 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:58,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:58,748 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:58,748 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:58,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:58,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:58,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_22=0} Honda state: {v_rep~unnamed0~0~false_22=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:58,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:58,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:04:58,764 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_22=1} Honda state: {v_rep~unnamed0~0~true_22=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:04:58,768 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:04:58,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:04:58,778 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:04:58,778 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:04:58,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:04:58,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:04:58,779 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:04:58,779 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:04:58,779 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,779 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:04:58,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:04:58,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2019-12-07 15:04:58,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:04:58,779 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:04:58,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:04:58,816 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:04:58,816 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:58,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:58,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:58,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:58,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:58,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:58,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:58,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:58,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,824 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:58,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:58,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:58,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:58,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:58,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:04:58,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:04:58,828 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:04:58,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:04:58,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:04:58,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:04:58,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:04:58,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:04:58,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:04:58,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:04:58,836 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:04:58,839 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:04:58,839 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/z3 Starting monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:04:58,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:04:58,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:04:58,841 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:04:58,841 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 15:04:58,842 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:04:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:58,859 INFO L264 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:04:58,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:04:58,869 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:04:58,869 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:04:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-12-07 15:04:58,921 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2019-12-07 15:04:58,921 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 245 transitions. cyclomatic complexity: 39 Second operand 12 states. [2019-12-07 15:04:59,215 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 245 transitions. cyclomatic complexity: 39. Second operand 12 states. Result 1146 states and 1366 transitions. Complement of second has 39 states. [2019-12-07 15:04:59,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2019-12-07 15:04:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 15:04:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 89 transitions. [2019-12-07 15:04:59,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 71 letters. Loop has 68 letters. [2019-12-07 15:04:59,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:59,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 139 letters. Loop has 68 letters. [2019-12-07 15:04:59,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:59,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 71 letters. Loop has 136 letters. [2019-12-07 15:04:59,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:04:59,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1146 states and 1366 transitions. [2019-12-07 15:04:59,221 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 72 [2019-12-07 15:04:59,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1146 states to 829 states and 976 transitions. [2019-12-07 15:04:59,225 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2019-12-07 15:04:59,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 158 [2019-12-07 15:04:59,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 829 states and 976 transitions. [2019-12-07 15:04:59,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:59,225 INFO L688 BuchiCegarLoop]: Abstraction has 829 states and 976 transitions. [2019-12-07 15:04:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states and 976 transitions. [2019-12-07 15:04:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 745. [2019-12-07 15:04:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-12-07 15:04:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 890 transitions. [2019-12-07 15:04:59,231 INFO L711 BuchiCegarLoop]: Abstraction has 745 states and 890 transitions. [2019-12-07 15:04:59,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:04:59,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:04:59,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:04:59,231 INFO L87 Difference]: Start difference. First operand 745 states and 890 transitions. Second operand 12 states. [2019-12-07 15:04:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:04:59,268 INFO L93 Difference]: Finished difference Result 295 states and 328 transitions. [2019-12-07 15:04:59,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 15:04:59,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 295 states and 328 transitions. [2019-12-07 15:04:59,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2019-12-07 15:04:59,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 295 states to 231 states and 264 transitions. [2019-12-07 15:04:59,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2019-12-07 15:04:59,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2019-12-07 15:04:59,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 231 states and 264 transitions. [2019-12-07 15:04:59,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:04:59,272 INFO L688 BuchiCegarLoop]: Abstraction has 231 states and 264 transitions. [2019-12-07 15:04:59,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states and 264 transitions. [2019-12-07 15:04:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2019-12-07 15:04:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-12-07 15:04:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 257 transitions. [2019-12-07 15:04:59,274 INFO L711 BuchiCegarLoop]: Abstraction has 224 states and 257 transitions. [2019-12-07 15:04:59,274 INFO L591 BuchiCegarLoop]: Abstraction has 224 states and 257 transitions. [2019-12-07 15:04:59,274 INFO L424 BuchiCegarLoop]: ======== Iteration 23============ [2019-12-07 15:04:59,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 257 transitions. [2019-12-07 15:04:59,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2019-12-07 15:04:59,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:04:59,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:04:59,276 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 2, 1, 1] [2019-12-07 15:04:59,276 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2019-12-07 15:04:59,276 INFO L794 eck$LassoCheckResult]: Stem: 19560#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 19561#L18-1 assume !!(main_~i~0 > 0); 19610#L12 assume 1 == main_~i~0;main_~up~0 := 1; 19609#L12-2 assume !(10 == main_~i~0); 19608#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19607#L18-1 assume !!(main_~i~0 > 0); 19606#L12 assume !(1 == main_~i~0); 19605#L12-2 assume !(10 == main_~i~0); 19604#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19603#L18-1 assume !!(main_~i~0 > 0); 19602#L12 assume !(1 == main_~i~0); 19601#L12-2 assume !(10 == main_~i~0); 19600#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19599#L18-1 assume !!(main_~i~0 > 0); 19598#L12 assume !(1 == main_~i~0); 19597#L12-2 assume !(10 == main_~i~0); 19596#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19595#L18-1 assume !!(main_~i~0 > 0); 19594#L12 assume !(1 == main_~i~0); 19593#L12-2 assume !(10 == main_~i~0); 19592#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19591#L18-1 assume !!(main_~i~0 > 0); 19590#L12 assume !(1 == main_~i~0); 19589#L12-2 assume !(10 == main_~i~0); 19588#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19587#L18-1 assume !!(main_~i~0 > 0); 19586#L12 assume !(1 == main_~i~0); 19585#L12-2 assume !(10 == main_~i~0); 19584#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19583#L18-1 assume !!(main_~i~0 > 0); 19582#L12 assume !(1 == main_~i~0); 19581#L12-2 assume !(10 == main_~i~0); 19580#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19579#L18-1 assume !!(main_~i~0 > 0); 19576#L12 assume !(1 == main_~i~0); 19578#L12-2 assume !(10 == main_~i~0); 19577#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19575#L18-1 assume !!(main_~i~0 > 0); 19574#L12 assume !(1 == main_~i~0); 19573#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 19568#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19569#L18-1 assume !!(main_~i~0 > 0); 19751#L12 assume !(1 == main_~i~0); 19750#L12-2 assume !(10 == main_~i~0); 19749#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19748#L18-1 assume !!(main_~i~0 > 0); 19746#L12 assume !(1 == main_~i~0); 19743#L12-2 assume !(10 == main_~i~0); 19740#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19737#L18-1 assume !!(main_~i~0 > 0); 19734#L12 assume !(1 == main_~i~0); 19731#L12-2 assume !(10 == main_~i~0); 19728#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19725#L18-1 assume !!(main_~i~0 > 0); 19722#L12 assume !(1 == main_~i~0); 19719#L12-2 assume !(10 == main_~i~0); 19716#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19713#L18-1 assume !!(main_~i~0 > 0); 19710#L12 assume !(1 == main_~i~0); 19707#L12-2 assume !(10 == main_~i~0); 19704#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19701#L18-1 assume !!(main_~i~0 > 0); 19698#L12 assume !(1 == main_~i~0); 19695#L12-2 assume !(10 == main_~i~0); 19692#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19689#L18-1 assume !!(main_~i~0 > 0); 19686#L12 assume !(1 == main_~i~0); 19683#L12-2 assume !(10 == main_~i~0); 19680#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19677#L18-1 assume !!(main_~i~0 > 0); 19674#L12 assume !(1 == main_~i~0); 19663#L12-2 assume !(10 == main_~i~0); 19670#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19667#L18-1 assume !!(main_~i~0 > 0); 19662#L12 assume 1 == main_~i~0;main_~up~0 := 1; 19556#L12-2 [2019-12-07 15:04:59,276 INFO L796 eck$LassoCheckResult]: Loop: 19556#L12-2 assume !(10 == main_~i~0); 19557#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19657#L18-1 assume !!(main_~i~0 > 0); 19656#L12 assume !(1 == main_~i~0); 19655#L12-2 assume !(10 == main_~i~0); 19654#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19653#L18-1 assume !!(main_~i~0 > 0); 19652#L12 assume !(1 == main_~i~0); 19651#L12-2 assume !(10 == main_~i~0); 19650#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19649#L18-1 assume !!(main_~i~0 > 0); 19648#L12 assume !(1 == main_~i~0); 19647#L12-2 assume !(10 == main_~i~0); 19646#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19645#L18-1 assume !!(main_~i~0 > 0); 19644#L12 assume !(1 == main_~i~0); 19643#L12-2 assume !(10 == main_~i~0); 19642#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19641#L18-1 assume !!(main_~i~0 > 0); 19640#L12 assume !(1 == main_~i~0); 19639#L12-2 assume !(10 == main_~i~0); 19638#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19637#L18-1 assume !!(main_~i~0 > 0); 19636#L12 assume !(1 == main_~i~0); 19635#L12-2 assume !(10 == main_~i~0); 19634#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19633#L18-1 assume !!(main_~i~0 > 0); 19632#L12 assume !(1 == main_~i~0); 19631#L12-2 assume !(10 == main_~i~0); 19630#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19629#L18-1 assume !!(main_~i~0 > 0); 19628#L12 assume !(1 == main_~i~0); 19627#L12-2 assume !(10 == main_~i~0); 19625#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19623#L18-1 assume !!(main_~i~0 > 0); 19618#L12 assume !(1 == main_~i~0); 19619#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 19571#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19572#L18-1 assume !!(main_~i~0 > 0); 19566#L12 assume !(1 == main_~i~0); 19567#L12-2 assume !(10 == main_~i~0); 19617#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19747#L18-1 assume !!(main_~i~0 > 0); 19745#L12 assume !(1 == main_~i~0); 19742#L12-2 assume !(10 == main_~i~0); 19739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19736#L18-1 assume !!(main_~i~0 > 0); 19733#L12 assume !(1 == main_~i~0); 19730#L12-2 assume !(10 == main_~i~0); 19727#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19724#L18-1 assume !!(main_~i~0 > 0); 19721#L12 assume !(1 == main_~i~0); 19718#L12-2 assume !(10 == main_~i~0); 19715#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19712#L18-1 assume !!(main_~i~0 > 0); 19709#L12 assume !(1 == main_~i~0); 19706#L12-2 assume !(10 == main_~i~0); 19703#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19700#L18-1 assume !!(main_~i~0 > 0); 19697#L12 assume !(1 == main_~i~0); 19694#L12-2 assume !(10 == main_~i~0); 19691#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19688#L18-1 assume !!(main_~i~0 > 0); 19685#L12 assume !(1 == main_~i~0); 19682#L12-2 assume !(10 == main_~i~0); 19679#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19676#L18-1 assume !!(main_~i~0 > 0); 19673#L12 assume !(1 == main_~i~0); 19661#L12-2 assume !(10 == main_~i~0); 19669#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19666#L18-1 assume !!(main_~i~0 > 0); 19660#L12 assume 1 == main_~i~0;main_~up~0 := 1; 19556#L12-2 [2019-12-07 15:04:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1439876841, now seen corresponding path program 16 times [2019-12-07 15:04:59,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:59,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851533074] [2019-12-07 15:04:59,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:59,285 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:59,286 INFO L82 PathProgramCache]: Analyzing trace with hash -680570443, now seen corresponding path program 16 times [2019-12-07 15:04:59,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:59,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433657788] [2019-12-07 15:04:59,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:59,294 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:04:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash -569285429, now seen corresponding path program 17 times [2019-12-07 15:04:59,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:04:59,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761369566] [2019-12-07 15:04:59,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:04:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:04:59,313 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:04:59,536 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 66 [2019-12-07 15:04:59,747 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2019-12-07 15:04:59,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 03:04:59 BoogieIcfgContainer [2019-12-07 15:04:59,771 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 15:04:59,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:04:59,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:04:59,771 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:04:59,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:04:51" (3/4) ... [2019-12-07 15:04:59,773 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 15:04:59,816 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_02afd497-9640-4132-9b1e-72486660d27f/bin/uautomizer/witness.graphml [2019-12-07 15:04:59,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:04:59,817 INFO L168 Benchmark]: Toolchain (without parser) took 8885.61 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 274.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -149.3 MB). Peak memory consumption was 124.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:04:59,817 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:04:59,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:04:59,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:04:59,817 INFO L168 Benchmark]: Boogie Preprocessor took 12.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:04:59,818 INFO L168 Benchmark]: RCFGBuilder took 142.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:04:59,818 INFO L168 Benchmark]: BuchiAutomizer took 8471.90 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 180.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.4 MB). Peak memory consumption was 449.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:04:59,818 INFO L168 Benchmark]: Witness Printer took 44.86 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:04:59,819 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8471.90 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 180.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.4 MB). Peak memory consumption was 449.9 MB. Max. memory is 11.5 GB. * Witness Printer took 44.86 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 31 terminating modules (20 trivial, 11 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 21 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. 20 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 224 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.4s and 23 iterations. TraceHistogramMax:19. Analysis of lassos took 5.4s. Construction of modules took 0.8s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 29. Automata minimization 0.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 585 StatesRemovedByMinimization, 28 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 224 states and ocurred in iteration 22. Nontrivial modules had stage [11, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 952/2604 HoareTripleCheckerStatistics: 204 SDtfs, 627 SDslu, 6 SDs, 0 SdLazy, 1859 SolverSat, 210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT1 conc0 concLT1 SILN0 SILU0 SILI9 SILT8 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf100 lsp35 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq198 hnf89 smp97 dnf110 smp98 tf111 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 32 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {up=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f7f5f9=0, \result=0, i=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 Loop: [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...